Showing posts with label texas. Show all posts
Showing posts with label texas. Show all posts

Thursday, 7 November 2019

Millions of monarch butterflies killed on Texas highways

NOVEMBER 5, 2019



Monarch butterflies are moving south through Texas on their annual autumn migration to overwintering sites in Central Mexico, but millions die in collisions with vehicles while flying low across Texas highways. Monarch numbers have declined about 82% over the last 23 years, and road mortality can significantly contribute to their dwindling numbers.

The monarch butterfly, Texas' state insect, was petitioned for protection under the federal Endangered Species Act in 2014. In response, many individuals, agencies and organizations, including Texas A&M's Department of Entomology, have been working to understand why the monarch population is so diminished and find solutions.

The problem for monarch butterflies in Texas

The early spring and closing autumn monarch migratory events occur in Texas. Some monarchs travel 3,000 miles from Canada to Mexico in the autumn, then return another 1,0000 miles back to Texas and Oklahoma in the spring to lay eggs. This gives the monarch the distinction of the longest migration of any insect.

On their journey North in the spring, monarchs lay eggs on milkweeds and pass through two generations in Texas before dispersing throughout the Midwest and Eastern U.S. Later generations reach as far north as Canada by the end of summer. On the return journey south during the autumn, the butterflies move through narrowing areas on their migration to Mexico. They basically go through a geographic funnel during their return to Mexico in the Fall.

Thursday, 18 July 2019

Strange new species of duck-billed dinosaur identified


JULY 15, 2019
The most complete skull of a duck-billed dinosaur from Big Bend National Park, Texas, is revealed in the Journal of Systematic Palaeontology as a new genus and species, Aquilarhinus palimentus. This dinosaur has been named for its aquiline nose and wide lower jaw, shaped like two trowels laid side by side.
In the 1980s, Texas Tech University Professor Tom Lehman (then a Master's student) was conducting research on rock layers at Rattle Snake Mountain and discovered badly-weathered bones. He and two others from the University of Texas at Austin collected them, but some were stuck together making them impossible to study. Research in the 1990s revealed an arched nasal crest thought to be distinctive of the hadrosaurid Gryposaurus. At the same time, the peculiar lower jaw was recognized. However, the specimen spent additional years waiting for a full description and it was not until recent analysis that the researchers came to realize that the specimen was more primitive than Gryposaurus and the two major groups of duck-billed dinosaurs.
"This new animal is one of the more primitive hadrosaurids known and can therefore help us to understand how and why the ornamentation on their heads evolved, as well as where the group initially evolved and migrated from," says lead author Dr. Albert Prieto-Márquez from the Institut Català de Paleontologia Miquel Crusafont, near Barcelona. "Its existence adds another piece of evidence to the growing hypothesis, still up in the air, that the group began in the southeastern area of the US."

Sunday, 20 January 2019

Central Texas salamanders, including newly identified species, at risk of extinction


January 14, 2019, University of Texas at Austin
Biologists at The University of Texas at Austin have discovered three new species of groundwater salamander in Central Texas, including one living west of Austin that they say is critically endangered. They also determined that an already known salamander species near Georgetown is much more endangered than previously thought.
Writing today in the journal Proceedings of the National Academy of Sciences, the team, which includes one of the scientists who identified the endangered Barton Springs salamander, warns that more severe droughts caused by climate change and increasing water use in Central Texas have left groundwater salamanders "highly vulnerable to extinction."
The groundwater salamanders of Central Texas—just 2 to 3 inches long—swim in springs, underwater caves and channels deep within limestone rock and are keystone species in the local Edwards and Trinity aquifers. As top predators, they help maintain the health of aquifer ecosystems, meaning they are key for preserving water quality in the aquifers that local residents depend on for nearly all the fresh water supplying nearby cities, industries and agriculture. The loss of these salamanders would compromise the delicate aquifer systems of which they are a critical part, the biologists said.

Sunday, 6 January 2019

Texas withdraws dunes sagebrush lizard conservation plan - via Herp Digest


The Austin America-Statesman, 12/20/18

Aiming to reform a troubled state program designed to stave off federal habitat protections for a rare lizard species in the petroleum-rich Permian Basin, Texas Comptroller Glenn Hegar in August asked the U.S. Fish and Wildlife Service to approve a new, beefed-up version meant to address what Hegar’s office called the plan’s “systemic problems.”

But concerned that stewardship of the lizard plan might be transferred out of the comptroller’s office to another entity, one that would keep the weaker plan in place, Hegar quietly informed the U.S. Fish and Wildlife Service last month that it was withdrawing the original conservation plan.

In short, rather than allow a company or other state agency to take charge of the plan in such a way that might short-circuit more stringent habitat protections, he unplugged the current conservation plan altogether.

The maneuver is the latest turn over how to protect the dunes sagebrush lizard amid a threat of federal action, and suggests something about the complicated nature of the politics and money involved in endangered species protection in the Trump era.

The U.S. Fish and Wildlife Service has yet to make a decision on Hegar’s August proposal.

That proposal eliminates scientifically unsupported conservation options and defines ways for companies to avoid lizard habitat, enacts fees from some companies operating in the lizard habitat to support conservation efforts to offset habitat disturbances and includes incentives to focus industrial activities in degraded or nonhabitat areas.
The 2012 Texas Conservation Plan, shepherded by then-Comptroller Susan Combs, enlisted oil and gas companies to voluntarily help preserve the lizard’s habitat.

Although the plan had succeeded in fending off the U.S. Fish and Wildlife Service’s efforts to designate the animal as endangered - and the strict land-use regulations that would have accompanied it - conservationists criticized it as favoring petroleum interests over the species.

In November Hegar’s office terminated Combs’ conservation plan.

“Since the submission of the new (plan), we understand that the Service has been asked to consider changes to the TCP, or perhaps even transfer administration of it to another entity,” Hegar wrote to Amy Leuders, the regional director for the U.S. Fish and Wildlife, on Nov. 8. “These requests detract from the effort to replace the TCP with a defensible, durable plan and are not in the best interest of the state, the Service, or the species.”

Hegar’s letter does not say what other entity could take over the conservation plan, but it came as energy companies, including ones that mine sand in the lizard habitat for fracking, a form of natural gas extraction, have pushed back against more stringent rules.

He continued: “The economic growth of the Permian Basin is essential to the economy of the region, the state and the nation. In order to maintain and build on that economic engine, Texas must continue to comply with the Endangered Species Act, while simultaneously providing a framework for our important industries to continue. The new (proposal) proposed by this office is a significant step in that direction and will provide certainty to participants into the future.”
The oil and gas industry had protected less land than Combs had forecast. And the original Texas Conservation Plan appeared to have vastly underestimated the size of dunes sagebrush lizard habitat.

A credit swap program meant to save habitat also turned out to be largely useless. Under the system, oil and gas companies paid a contractor to remove large clumps of mesquite on private ranchland in exchange for permission to excavate on comparably sized lizard habitat on their own drill sites.

Oil and gas companies liked the program. But there often was little consideration as to whether the mesquite removal was being done on land genuinely favorable to the species.

And while the conservation plan called for lizard habitat hit by surface disturbances to be mitigated or repaired - removing abandoned concrete well pads and roads, for example - between 2013 and 2014 the comptroller’s office determined that a foundation monitoring the plan had failed to do the work on several sites.

The dunes sagebrush lizard was first identified as needing protection in 1982. In 2002 the Center for Biological Diversity, an environmental group, petitioned for protection, leading to a 2010 proposal by the U.S. Fish and Wildlife Service to safeguard the lizard as endangered.

The proposal, however, was withdrawn in 2012 because of the conservation plan devised by Combs, who now works at the U.S. Department of Interior.

“The dunes sagebrush lizard needs every ounce of help it can get, but Texas and the oil and gas industry are determined to stand in the way,” Chris Nagano, a senior scientist at the Center for Biological Diveristy. “The only reason this rare lizard isn’t protected is political interference by the same fossil fuel interests rapidly destroying its habitat.”

In May, the Center for Biological Diversity and Defenders of Wildlife filed a second petition to protect the lizard under the Endangered Species Act. To date the Service has not made a determination on that petition.



Friday, 28 December 2018

A future for red wolves may be found on Galveston Island, Texas


Date:  December 11, 2018
Source:  Michigan Technological University
The American red wolf is one of United States' greatest wildlife conservation stories. Red wolves were on the brink of extinction along the American Gulf Coast during the late 1970s when the U.S. Fish and Wildlife Service (USFWS) made a bold decision to purposely remove all remaining red wolves from the wild.
But over the past few years the wild population is once again dwindling (from about 130 individuals in the wild to a mere 30) amongst political controversy and pressure from a number of landowners to be able to shoot the wolves on their land.
In addition to the wild population, there are approximately 200 red wolves in captivity.
The entire red wolf population descends from 14 individual animals, of which only 12 are genetically represented.
"Our discovery that red wolf genes have persisted in Texas -- after being declared extinct in the wild -- was very surprising," said Brzeski, assistant professor in the School of Forest Resources and Environmental Science. "It introduces both positive opportunities for additional conservation action and difficult policy challenges."
Brzeski and her coauthors published their findings, "Rediscovery of Red Wolf Ghost Alleles in a Canid Population Along the American Gulf Coast" Dec. 10, 2018 in the journal Genes.
The researchers obtained tissue samples from two roadkill canids on Galveston Island and conducted analyses with genome-wide single nucleotide polymorphism and mitochondrial DNA from 60 animals that represented all potential sources of ancestry for the Galveston Island canids: coyotes, red wolves and gray wolves. Brzeski and others found that the Galveston Island canids have both red wolf and coyote alleles, likely related to species interbreeding during the 1970s as coyote populations expanded across North America.

Monday, 9 April 2018

Texas Proposes Ending Unsustainable Commercial Wild Turtle Trapping – via Herp Digest


List of States Curbing Commercial Turtle Harvest Grows


Texas Spiny Softshell, by Gary M. Stolz, USFWS, Image available for media use.

Press Release 3/21/18- Austin, Texas- In response to a petition<http://www.biologicaldiversity.org/campaigns/southern_and_midwestern_freshwater_turtles/pdfs/Petition_to_TPWD_to_End_Commercial_Collection_of_Turtles.pdf> filed by the Center for Biological Diversity and several Texas-based conservation organizations, the Texas Parks and Wildlife Commission today approved publication of a proposed rule that would prohibit commercial collection of the state's wild turtles.

"We're so grateful these badly needed protections for Texas' rare, native turtles are moving forward," said Jenny Loda, a Center attorney and biologist who works to protect vulnerable reptiles and amphibians. "For-profit collectors shouldn't be allowed to put the state's turtles at risk of extinction."

Texas is the latest in a growing list of states - including Missouri, New York and Iowa - that have put an end to unlimited commercial collection of freshwater turtles.

Under current Texas law, unlimited collection of four native, freshwater turtle species is allowed on private property: common snapping turtles, red-eared sliders, smooth softshells and spiny softshells.

Texas modified its regulations in 2007 to protect freshwater turtles from collection on the state's public lands and waters. But this only resulted in protections for turtles in 2.2 percent of the water bodies in Texas. Recent studies concluded that current turtle collection in Texas is likely not sustainable.

At today's Texas Parks and Wildlife Commission meeting, staff from the state Parks and Wildlife Department presented their findings based on a review of the petition, along with scientific literature and the department's own data. Department staff determined that there is sufficient scientific justification to prohibit the commercial collection of the common snapping turtle, red-eared slider, smooth softshell and spiny softshell.

Department officials further explained that turtles are among the nongame species of greatest concern in Texas. Turtles' slow reproduction makes it unlikely that populations can remain stable when high numbers of adults and older juveniles are steadily removed from a population.

"This is great news for Texas' freshwater turtles as commercial trapping is devastating to turtle populations that are already suffering from multiple other threats, including habitat loss, water pollution and vehicular collisions," said Evelyn Merz, conservation chair for the Sierra Club's Lone Star Chapter. "We hope that the state will finalize the proposed rule and ban commercial turtle trapping; otherwise, Texas' turtle populations will continue to plummet."

The petition that spurred today's action was submitted last year by the Center for Biological Diversity, Sierra Club's Lone Star Chapter, Texas Rivers Protection Association and Texas Snake Initiative.

Background

Millions of turtles classified as wild-caught are exported from the United States every year to supply food and medicinal markets in Asia, where native turtle populations have already been depleted by soaring consumption. Because turtles bioaccumulate toxins from prey and burrow in contaminated sediment, turtle meat is often laced with mercury, PCBs and pesticides, posing a health risk. Adult turtles are also taken from the wild to breed hatchlings for the international pet trade.

As part of a campaign<http://www.biologicaldiversity.org/campaigns/southern_and_midwestern_freshwater_turtles/index.html> to protect turtles in the United States, the Center for Biological Diversity has been petitioning states that allow unrestricted commercial turtle collection to improve their regulations. Earlier this month, in response to a Center petition, the Missouri Department of Conservation banned commercial collection of the state's wild freshwater turtles. In September of last year, Nevada created a statewide ban on the destructive commercial collection of all reptiles and New York halted all commercial terrapin turtle harvesting.

Before that, in March 2017, Iowa adopted new regulations setting closed seasons and possession limits for commercial turtle trappers. In 2012 Georgia approved state rules regulating the commercial collection of turtles, and Alabama completely banned commercial collection. And in 2009 Florida responded by banning almost all commercial collection of freshwater turtles from public and private waters.

Texas is in a regional hotspot for commercial turtle collectors, and reform is needed. If the state ends commercial collection within its borders, adjacent states would likely follow its example; the region would be better equipped to protect its turtle populations by making clear to turtle traders that trade is strictly regulated and enforced.


Contacts:
Jenny Loda, Center for Biological Diversity, (510) 844-7136, jloda@biologicaldiversity.org<mailto:jloda@biologicaldiversity.org>
Evelyn Merz, Sierra Club, (713) 644-8228, elmerz@hal-pc.org<mailto:elmerz@hal-pc.org

Sunday, 1 April 2018

Are fire ants worse this spring because of Hurricane Harvey?



Ecologists are checking to see if floods gave advantage to invasive ants

Date:  March 26, 2018
Source:  Rice University

Summary:
Ecologists are checking to see if Hurricane Harvey's unprecedented floods gave a competitive boost to fire ants and crazy ants, two of southeast Texas' least favorite uninvited guests.

Wednesday, 21 February 2018

Zebra mussels spotted in Lady Bird Lake; Lake Austin now ‘infested’


9:44 a.m. Thursday, Feb. 15, 2018  Local News

Zebra mussels have been spotted in Lady Bird Lake, and Texas wildlife officials now consider Lake Austin to be “infested” with the invasive species.

Lady Bird Lake was upgraded to “suspect” status because mussels or their larvae have been found at least once after the Lower Colorado River Authority found several larvae in a plankton sample, according to a statement from the Texas Parks and Wildlife Department.

Lake Austin is considered infested once wildlife officials confirmed an established, reproducing population of zebra mussels. Texas Parks and LCRA staff found adult zebra mussels and larvae in multiple locations, including Tom Miller Dam and the Pennybacker Bridge, wildlife officials said.

The infestation at Lake Austin and the discovery of microscopic zebra mussel larvae in Lady Bird Lake come less than a year after the animals were first spotted upstream in Lake Travis last June.

Zebra mussels can not only harm native freshwater species, but they also can affect water clarity, cause algae blooms, litter beaches with sharp shells, clog water intakes on hydroelectric facilities, and damage boats and motors.

Monica McGarrity, whose team at Texas Parks and Wildlife monitors aquatic invasive species, said that once zebra mussels appeared in the Colorado River basin, they were likely to spread downstream.





Thursday, 8 February 2018

Protest set for Texas wildlife refuge at ground zero of Trump's border wall plan


The Santa Ana refuge, home to migratory birds, butterflies and ocelots, could soon be dominated by a militarised barrier

Tom Dart in Houston
Sat 27 Jan 2018 12.00 GMTLast modified on Sat 27 Jan 2018 12.01 GMT

As politicians in Washington quarrel over funding for border security, a protest rally is planned for Saturday at the Texas wildlife centre that is set to be one of the first locations of Donald Trump’s wall.

This year marks the 75th anniversary of the Santa Ana national wildlife refuge, a 2,088-acre site by the Rio Grande river that is festooned with Spanish moss and a haven for migratory birds, butterflies and ocelots. But campaigners fear the sanctuary will be wrecked if the government builds a giant barrier through it.

 “It’s one of the most biodiverse refuges in the United States,” said Scott Nichol of the Sierra Club, an environmental advocacy organisation that is one of the groups holding the event in a field adjacent to the refuge.

Ocelots – small, spotted wild cats – are endangered in the US because of habitat destruction and Nichol fears that a wall would trap them, not only restricting their movement but killing them if the area floods during a storm. “That basically turns the refuge into a death trap, the waters rise and the animals all drown,” he said.


Monday, 27 November 2017

Texas to Propose Ending Unlimited Commercial Wild Turtle Trapping – via Herp Digest

Nationwide Efforts to Ban Unsustainable Reptile Collection Gain Momentum 
For Immediate Release, November 15, 2017
Contact:  Jenny Loda, (510) 844-7136, jloda@biologicaldiversity.org   

AUSTIN, Texas— In response to a petition filed by the Center for Biological Diversity and several Texas-based conservation organizations, the Texas Parks and Wildlife Department on Tuesday agreed to propose a rule ending unlimited commercial trapping of the state’s wild turtles. 
“We’re so grateful these badly needed protections for Texas’ rare, native turtles are moving forward,” said Jenny Loda, a Center attorney and biologist who works to protect vulnerable reptiles and amphibians. “A few for-profit collectors shouldn’t be allowed to put the state’s turtles at risk of extinction. We’re hopeful the Texas Parks and Wildlife Commission will do the right thing and ban this harmful turtle trade.” 
Texas is the latest in a list of states to ban or propose ending commercial reptile collection that includes New York, Missouri and Nevada. 
Under current Texas law, unlimited collection of four native, freshwater turtle species is allowed on private property: common snapping turtles, red-eared sliders, smooth softshells and spiny softshells. 
Texas modified its regulations in 2007 to protect freshwater turtles from collection on its public lands and waters. But this only resulted in protections for turtles in 2.2 percent of the water bodies in Texas. Recent studies concluded that current turtle collection in Texas is likely not sustainable.
The Parks and Wildlife Department’s response to the conservation organizations’ petition came in a letter to the Texas Parks and Wildlife Commissioners. In it, the department’s executive director, Carter Smith, wrote that a review of the petition, along with scientific literature and the department’s own data, led to the conclusion that “there is sufficient scientific justification at this time to proceed to rulemaking to end the unlimited commercial collection of freshwater turtles.” 
The department’s letter says turtles are “[a]mong the nongame species of greatest concern” and are “highly sensitive to population alterations.” Department staff plans to propose a rulemaking at a future commission meeting.
“This is great news for Texas’s freshwater turtles and for all of us who care about the health of the state’s rivers,” said Tom Goynes, president of the Texas Rivers Protection Association. “Commercial trapping is devastating to turtle populations that are already suffering from multiple other threats, including habitat loss, water pollution and vehicular collisions.”
Millions of turtles classified as wild-caught are exported from the United States every year to supply food and medicinal markets in Asia, where native turtle populations have already been depleted by soaring consumption. Because turtles bioaccumulate toxins from prey and burrow in contaminated sediment, turtle meat is often laced with mercury, PCBs and pesticides, posing a health risk. Adult turtles are also taken from the wild to breed hatchlings for the international pet trade.
“The future of Texas turtles is now in the hands of the Department of Parks and Wildlife and wildlife commissioners,” said Loda. “We’re pleased the department is taking this step toward restricting commercial turtle collection. We urge the commission to fully and finally protect these animals as an invaluable part of state ecosystems.”
The petition that spurred Tuesday’s action was submitted earlier this year by the Center for Biological Diversity, Sierra Club's Lone Star Chapter, Texas Rivers Protection Association and Texas Snake Initiative.
Background
As part of a 
campaign to protect turtles in the United States, the Center for Biological Diversity has been petitioning states that allow unrestricted commercial turtle collection to improve their regulations. Last month, in response to a Center petition, the Missouri Department of Conservation proposed a ban on unlimited commercial collection of the state’s wild freshwater turtles. In September, Nevada created a statewide ban on the destructive commercial collection of all reptiles and New York halted all commercial terrapin turtle harvesting.
Before that, in March, Iowa adopted new regulations setting closed seasons and possession limits for commercial turtle trappers. In 2012 Georgia approved state rules regulating the commercial collection of turtles, and Alabama completely banned commercial collection. And in 2009 Florida responded by banning almost all commercial collection of freshwater turtles from public and private waters.
Texas is in a regional hotspot for commercial turtle collectors, and reform is needed. If the state created closed seasons and bag limits within its borders, adjacent states would likely follow its example; the region would be better equipped to protect its turtle populations by making clear to turtle traders that trade is strictly regulated and enforced. 
The Center recently petitioned for a ban on unlimited commercial trapping in ArkansasLouisiana and Oklahoma, three states that share a border with Texas.

Sunday, 4 June 2017

Groups Want End to Unlimited Capture of Four Native Species in Texas - via Herp Digest



AUSTIN, Texas— Press release 5/31/17 The Center for Biological Diversity and several Texas-based conservation organizations petitioned the Texas Parks and Wildlife Department today to end commercial trapping of the state’s wild turtles. 

Under current Texas law, turtle trappers can collect unlimited numbers of four turtle species on private lands to sell domestically or export for international food and medicinal markets. This is putting turtle populations — already facing pollution and habitat loss — at risk across the state.

“For-profit turtle trappers shouldn’t be allowed to drive the state’s turtles to the brink of extinction,” said Jenny Loda, an attorney and biologist at the Center who works to protect vulnerable reptiles and amphibians. “Scientists have concluded that even modest commercial trapping of freshwater turtles can lead to population crashes. For the sake of our native turtles, Texas needs to stop this exploitative trapping.”

More than 2,000 freshwater turtles were trapped in Texas over the past two years, according to reports submitted by holders of nongame dealer permits to the Parks and Wildlife Department. International food and medicinal markets drive most of the trade.

Because turtles accumulate toxins from prey in their bodies and burrow into contaminated sediment, their meat is often laced with mercury, PCBs and pesticides, posing a health risk. Adult turtles are also taken from the wild to breed hatchlings for the international pet trade.

Texas modified its regulations in 2007 to protect freshwater turtles from harvest on its public lands and waters; however, this only resulted in protections for turtles in 2.2 percent of the water bodies in Texas. Under current law unlimited harvest of four native, freshwater turtle species is allowed on private property in the state: common snapping turtles, red-eared sliders, smooth softshells and spiny softshells. Recent studies concluded that current turtle harvest regulations in Texas are not likely to be sustainable.

“Commercial trapping is devastating to turtle populations that are already suffering from multiple other threats, including habitat loss, water pollution and vehicular collisions,” said Evelyn Merz, conservation chair for the Sierra Club's Lone Star Chapter. “Unless the state bans commercial turtle trapping, Texas’ turtle populations will continue to plummet.”

Today’s petition was submitted by the Center for Biological Diversity, Sierra Club's Lone Star Chapter, Texas Rivers Protection Association and Texas Snake Initiative.

Background 
As part of a campaign to protect turtles in the United States, the Center has been petitioning states that allow commercial turtle collection to improve their regulations.

In 2009 Florida responded by banning almost all commercial turtle collection from public and private waters. In 2012 Georgia approved state rules restricting commercial turtle collection, and Alabama completely banned it. And last year the Missouri Department of Conservation announced — in response to a Center petition — that it will consider ending unlimited commercial collection of the state’s wild freshwater turtles. Most recently, in March, new regulations went into effect in Iowa setting closed seasons and possession limits for commercial turtle trappers.

Texas is in a regional hotspot for commercial turtle collectors, and reform is needed. If the state created closed seasons and bag limits within its borders, adjacent states would likely follow its example; the region would be better equipped to protect its turtle populations by making clear to turtle traders that trade is strictly regulated and enforced.

The Center also recently petitioned for a ban on unlimited commercial trapping in Louisiana and Oklahoma, two states that share a border with Texas.

 Contact:        Jenny Loda, Center for Biological Diversity, (510) 844-7136, jloda@biologicaldiversity.org
Evelyn Merz, Sierra Club, (713) 644-8228, elmerz@hal-pc.org
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