Scottish barnacle goose in the USA


Barnacle Goose from Harold Stiver on Vimeo.

This video from Canada says about itself:

This small goose has shown up in Ontario in a flock of the larger Canada Goose.

From the BTO Bird Ringing blog in Britain:

30 November 2010

The first Barnie causes a twitch

There are very few reports of UK ringed birds in America and the majority are Manx Shearwater (8) and Great Skua (3). We have also had single reports of White-fronted and Canada Goose, Turnstone, Kittiwake, Arctic, Roseate and Common Tern.

Yesterday we received an email from Jack Rothman informing us of the first British ringed Barnacle Goose to be recorded in America! Barnacle Geese in North America are rare anyway but one with a known origin is brilliant. This bird was seen at Orchard Beach, Bronx which is 5204km from where it was ringed.

Barnacle Goose 1291347 was ringed by Steve Percival on 13/11/2002 and was seen frequently on Islay until March 2005 when it disappeared. One of its parents and a sibling where ringed at the same time and are still seen around Islay.

May 2011: The potential impact of wind farms on barnacle geese has led experts at WWT to fit GPS satellite tags to five birds to determine their precise movements as they migrate: here.

Waddenzee great skua: here.

Freshwater mussels discovery in Delaware river, USA


This video from the USA is called Freshwater Mussel TV – Wavy-rayed Lampmussel (Lampsilis fasciola) mantle lure display.

From the Academy of Natural Sciences in the USA:

Freshwater mussels discovered in urban Delaware river

November 30, 2010

Scientists working with the Partnership for the Delaware Estuary and The Academy of Natural Sciences have made an important discovery in the Delaware River between Chester, Pennsylvania, and Trenton, New Jersey: beds of freshwater mussels. This includes several uncommon species, two of which were previously believed to no longer exist in both Pennsylvania and New Jersey.

“Freshwater mussels are very sensitive to a variety of problems, including pollution, dams, water flows, loss of forests, and harvesting for their shells and as bait,” said Dr. Danielle Kreeger, science director at the Partnership for the Delaware Estuary. “We have so few mussels left in almost all of our streams in the area, so to find seven species living together in dense communities right near Philadelphia was unexpected and cause for celebration.”

Freshwater mussels are the most imperiled of all plants and animals in North America Nearly three-quarters of the continent’s 300 species are in decline, and many are either extinct or headed toward extinction. In the Delaware River Basin, most of the one dozen native species are classified as reduced, threatened, or locally extinct. One of the basin’s species is considered endangered at the federal level and others are listed as endangered at the state level. Water pollution and degraded habitats are the most common reasons for these declines. That is why scientists are so excited to find them in this stretch of the river.

One reason freshwater mussels may be doing better in the Delaware River compared to surrounding tributaries is the fact that the Delaware is the longest free-flowing river east of the Mississippi. Dams often block fish from swimming up the river, and this can interrupt the complicated breeding processes of freshwater mussels. Mussels rely upon fish to carry their babies, or larvae, around, including upstream. Whenever dams block these fish, they fail to deliver their payload of mussel larvae to new areas where they can grow and thrive. Pennsylvania has more dams than any other state, and many of these are located in streams throughout the Delaware Valley. The lone exception is the Delaware River. …

Restoring freshwater mussels won’t be easy or fast, however. Although freshwater mussels can help to boost water quality, they are also some of the most sensitive animals to polluted water. Therefore, some area streams may not be able to sustain mussels until water quality is further improved or riverside woodlands are replanted. Also, freshwater mussels live to be up to 100 years old and are slow growing. But this does not concern Dr. Kreeger, who said, “We’ve made tremendous strides in improving some environmental conditions needed to support healthy ecosystems. That said, we know our job won’t be complete until we see the return of these long-lived sentinels of healthy waterways.”

Of the seven species of native freshwater mussels discovered this past summer,

* Two species were thought to be extinct in Pennsylvania and New Jersey: the alewife floater, or Anodonta implicata, and the tidewater mucket, or Leptodea ochracea.
* Two species are considered critically-imperiled: the pond mussel, or Ligumia nasuta, and yellow lampmussel, or Lampsilis cariosa.
* Two species are considered vulnerable: the creeper, or Strophitus undulates, and the eastern floater, or Pyganodon cataracta
* One species is listed as common: the eastern elliptio, or Elliptio complanata

Galician researchers have studied the evolution in the introduction of non-native fresh water species in Galicia over the past century, and have compared this with the rest of the Iberian Peninsula. The results show that 31 exotic aquatic species out of the 88 recorded for the entire Iberian Peninsula have become established in the region: here.

http://media.vara.nl/player/player.swf

This is a Dutch video on marine mussels.

United States fundamentalist Christian misogyny


This video from the USA says about itself:

At this program on March 11, 2009 at the Museum [of Jewish Heritage], three women discussed their struggle to reconcile their feminism with their religious beliefs and practices, and shared how they have reclaimed their religions in a personal way.

From left to right: Kathryn Joyce (moderator), “Quiverfull: Inside the Christian Patriarchy Movement”; Reverend Jane Holmes Dixon, former Episcopal Bishop of Washington; Asra Q. Nomani, “Standing Alone: An American Woman’s Struggle for the Soul of Islam”; and Blu Greenberg, “On Women and Judaism: A View from Tradition”.

From Bitch Magazine in the USA:

By Gina McGalliard

Creepy Christian Patriarchy Movement Shackles Daughters to Their Fathers and Homes

The stay-at-home-daughters movement encourages young girls and single women to forgo college and employment in favor of training as “keepers at home.”

November 29, 2010

“Daughters aren’t to be independent. They’re not to act outside the scope 
of their father. As long as they’re under the authority of their fathers, fathers have the ability to nullify or not the oaths and the vows. Daughters can’t just go out 
independently and say, ‘I’m going to marry whoever I want.’ No. The father has 
the ability to say, ‘No, I’m sorry, that has to be approved by me.’”

Israeli women must pay ex-husbands for divorce: here.

Smaller rainforests helped Carboniferous-Permian reptiles


Phylogeny of reptiles

From the BBC:

30 November 2010 Last updated at 09:12 GMT

Rainforest collapse kickstarted reptile evolution

By Paul Rincon Science reporter, BBC News

The fragmentation of tropical rainforests 300 million years ago helped pave the way for the rise of the dinosaurs, a new study suggests.

In the Carboniferous period, North America and Europe lay at the equator and were covered by steamy rainforest.

Global warming is thought to have brought about the collapse of these tropical habitats, triggering an evolutionary burst among reptiles.

The work, by a British team, is published in the journal Geology.

The forests that covered the ancient supercontinent of Euramerica are colloquially referred to as the Coal Forests.

They are so called because they accumulated a large amount of peat, which later turned into the coal that is mined today.

Towards the end of the Carboniferous, the Earth’s climate is thought to have grown hotter and drier.

“Climate change caused rainforests to fragment into small ‘islands’ of forest,” said co-author Howard Falcon-Lang, from Royal Holloway, University of London.

Dr Falcon-Lang continued: “This isolated populations of reptiles, and each community evolved in separate directions, leading to an increase in diversity.”

To reach their conclusions, the scientists studied the fossil record of reptiles before and after the collapse of the rainforests.

They showed that reptiles became more diverse and even changed their diets as they struggled to adapt to a rapidly changing climate and environment.

Advantage reptiles

Professor Mike Benton, from the University of Bristol, said: “This is a classic ecological response to habitat fragmentation.

“You see the same process happening today whenever a group of animals becomes isolated from its parent population.

“It’s been studied on traffic islands between major road systems or, as Charles Darwin famously observed in the Galapagos, on oceanic islands.”

His Bristol colleague Sarda Sahney commented: “It is fascinating that even in the face of devastating ecosystem-collapse, animals may continue to diversify.”

Amphibians appear to have been hardest hit by the collapse of the rainforests. The relative success of reptiles may have been due to physical adaptations in which they differed from amphibians.

Firstly, the hard-shelled eggs of reptiles could be laid on dry land (most amphibians lay theirs in water). Secondly, reptiles possess protective scales that help them retain moisture (amphibian skin is very permeable to water).

“These key adaptations freed them from the aquatic habitats to which amphibians were tied and gave them ecologic advantage in the widespread drylands that developed,” the researchers write in Geology.

See also here.

Only when tree-like plants with deep roots took hold some 330 million years ago did river banks finally come under control, say researchers: here.

Pompeii-like, a 300-million-year-old tropical forest was preserved in ash when a volcano erupted in what is today northern China. A new study by University of Pennsylvania paleobotanist Hermann Pfefferkorn and colleagues presents a reconstruction of this fossilized forest, lending insight into the ecology and climate of its time: here.

Rare gharials return in India


This video is called Indian Gharial Giant Crocodile.

From the Times of India:

Wildlife experts cheer gharial‘s return to Hooghly

Prithvijit Mitra, TNN, Nov 29, 2010, 12.54am IST

KOLKATA: It’s being termed a miraculous revival that has taken wildlife experts and conservationists by surprise. And raised hopes about the survival of species that is now seriously threatened. The gharial the long-snouted fresh-water crocodile is back in the Hooghly.

They have been spotted in numbers that are larger than had been expected when the reptiles were spotted after a gap of 60 years in downstream Hooghly two years ago. Now, a team of researchers has identified a breeding group at Purbasthali in Burdwan which signals that the gharials are finally multiplying.

A young gharial, about three feet in length, was trapped in a fishing net at Purbasthali on Saturday. About a half-a-dozen more followed it into the net. They were all pulled up, examined and released back into the river. “By last count, the number of gharials had shot up to around 180. Now, it seems the number is actually more than 250 since they are breeding. We have spotted even smaller ones, new-born gharials merely six inches long. This is great news for conservation since the reptile was taken to be extinct in eastern India for six decades,” said Tanmoy Ghosh, president of iRebel an NGO that has been researching on gharials with support from the West Bengal Bio-Diversity Board and the Hooghly Zilla Parishad.

According to the International Union for Conservation of Nature and Natural Resources (IUCNNR), less than 200 breeding gharials now survive in the wild. They started disappearing from their original habitat the Ganges and the rivers of Bangladesh in the first half of the last century. Unrestricted fishing is held to be one of the major reasons behind this. Cultivation along the banks where they lay their eggs destroyed their breeding habitat.

A study carried out in two phases since 2008 suggests that the reptiles are flocking back to Hooghly. It was carried out over an area of 500 km along the Hooghly from Farakka to Tribeni. “We have been spotting them off and on but not in large numbers. Now that bigger groups have been seen, it is clear that they are returning to the Hooghly. Perhaps even more encouraging is the fact that they are breeding here,” said Pranabesh Sanyal, conservationist and former field director of the Sunderban Tiger Reserve.

The iRebel team has now stationed itself at Purbasthali. Fishermen and locals have been involved in the study.

See also here.

Endangered crocodiles in Uttar Pradesh – Sify: here.