Otter in a stream, video

This 8 March 2019 video shows an otter in a stream in a nature reserve in Friesland province in the Netherlands.

John van de Veen made this video.

Panama fruit feeder birds video

This video says about itself:

Panama Fruit Feeder: All Species – March 18, 2019

Want to learn to identify all of the species we have seen on the Panama Fruit Feeder Cam? This is a good place to start! This video contains film or photos of all of the species we’ve seen to date. Want to skip to a particular species? Use the timestamps listed below, reported in mm:ss.

Clay-colored Thrush 00:21 Collared Aracari 00:33 Rufous Motmot 00:46 Gray-headed Chachalaca 00:58 Gray-cowled Wood-Rail 01:09 Chestnut-headed Oropendola 01:22 Streaked Saltator 01:34 Buff-throated Saltator 01:45 Spot-crowned Barbet 01:57 Red-crowned Woodpecker 02:09 Thick-billed Euphonia 02:22 Crimson-backed Tanager 02:35 Blue-gray Tanager 02:47 Dusky-faced Tanager 02:59 Flame-rumped Tanager 03:11 Palm Tanager 03:24 Silver-throated Tanager 03:36 Red-crowned Ant-Tanager 03:48 White-lined Tanager 04:00 Golden-hooded Tanager 04:11 Variable Seedeater 04:24 Bananaquit 04:36 Snowy-bellied Hummingbird 04:48 Long-billed Hermit Hummingbird 04:52 Rufous-tailed Hummingbird 04:55 Stripe-throated Hermit 05:08 Green Hermit 05:13 White-vented Hummingbird 05:20 Red-legged Honeycreeper 05:25 Green Honeycreeper 05:39 Black-chested Jay 05:51 Cocoa Woodcreeper 05:58 House Wren 06:10 Bay Wren 06:22 Barred Antshrike 06:30 Common Tody-Flycatcher 06:42 Ochre-bellied Flycatcher 06:53 Chestnut-sided Warbler 07:02 Rufous-capped Warbler 07:12 Orange-billed Sparrow 07:22 Black-striped Sparrow 07:35 White-tipped Dove 07:47 Ruddy Ground-Dove 07:59 Summer Tanager 08:10 Baltimore Oriole 08:22 Swainson’s Thrush 08:35 Olive-striped Flycatcher 08:47 Prothonotary Warbler 09:00 Tennessee Warbler 09:12 Mourning Warbler 09:24 Canada Warbler 09:28 Yellow Warbler 09:35

Leatherback turtles, research and conservation

This video is called National Geographic Animals 2017 | Giant Leatherback Sea Turtle! | Wildlife Documentary.

From the University of Maryland Center for Environmental Science in the USA:

Tracking turtles with telemetry

New model predicts where Eastern Pacific leatherback turtles travel to help protect endangered species

March 14, 2019

A new model has been created that can forecast the location of Eastern Pacific leatherback turtles along the coast of Central and South America in an effort to decrease bycatch mortality of this critically endangered and ecologically important species.

Scientists from University of Maryland Center for Environmental Science have developed a unique model in collaboration with Dr. George Shillinger at the nonprofit Upwell Turtles that can predict on a monthly basis where Eastern Pacific leatherbacks are most likely to be residing.

“Upwell was created to address an unmet need in sea turtle conservation: protecting turtles in the ocean, where they spend most of their lives. By engaging new consistencies and improving access to predictive tools, like the South Pacific Turtle Watch, we can reduce the threats turtles face at sea from fisheries interactions,” said Upwell Executive Director Dr. George Shillinger.

A website called South Pacific Turtle Watch will be launched in coordination with this study as an online resource to educate the public on the importance of protecting leatherback turtles and to allow public access to the models predicting Eastern Pacific leatherbacks’ location.

By providing countries connected to this species with this information, scientists hope for a decrease in the accidental capture of Eastern Pacific leatherback turtles by fisheries, a threat that is partially responsible for the species’ 98 percent decline since the 1980s.

“A lot of managers and government agencies in Central and South America have been asking for something. They know leatherback populations are declining, they know fisheries have a role in it, so they have been thirsty for some information about what they can do so leatherbacks don’t disappear,” said study author Aimee Hoover of the University of Maryland Center for Environmental Science.

The decline in this leatherback turtle population is not all to blame on fisheries, but the purpose of this study was to produce data to inform potential management strategies to help both turtles and fishermen.

“Fishers aren’t targeting leatherbacks and other marine turtle species,” said Shillinger. “Incidental capture of turtles consumes time, damages equipment, and attracts unwanted negative attention. The South Pacific Turtle Watch tool will enable fishers to take proactive measures to reduce their bycatch, potentially reducing the risk of fisheries-turtle interactions within high-use turtle habitats.”

Leatherback turtles, which can live over 45 years, grow up to 2000 pounds, and reach lengths over 9 feet, prey exclusively upon gelatinous zooplankton. As such, leatherbacks play an important role as a keystone species in controlling jellyfish populations, which may be increasing as a result of changing climatic conditions and food web alterations from fisheries pressures. Jellyfish are not only important for the diet of these turtles but can damage fishermen’s nets and boats if they are caught in high numbers. It is estimated that less than 1,000 adult females of the species remain.

This study is the first segment of a two-part project hoping to improve leatherback turtle management strategies. This portion focused on modeling turtle residence time — how long the individual stays in one location — through satellite telemetry. Researchers are currently working on a complementary paper that will predict leatherbacks’ location through observer data collected from trained observers and volunteers on fishing vessels that encounter this critically endangered species.

Satellite telemetry technology allows for measurements and data to be collected remotely, which allows these free-moving creatures to be tracked from a distance for years once they are tagged with satellite transmitters. Turtles tagged in Costa Rica, Mexico and Peru were tracked for up to two years during a period spanning over two decades. In total, tracks from 45 different leatherbacks were used in the final analyses of this study.

The model predicts the seasonal route of leatherbacks, who migrate south from their nesting beaches into the South Pacific Gyre and then travel north to warmer temperatures near the equator during the winter, forming a circular pattern. Leatherback turtles are predicted to either travel down along the coast of Central America or travel out to the Pacific Ocean and south.

This statistically advanced model confirms previous tracks that have been developed and allows monthly models to be predicted based on current environmental conditions of leatherbacks’ habitat, such as temperature, upwelling and sea surface height. Upwelling is of particular interest to turtles as it refers to the process of nutrient rich waters being brought to the surface that leads to increased abundance of prey, like gelatinous zooplankton.

“To our knowledge we’re paving the way by incorporating dynamic environmental variables,” commented Hoover. “Every month we’re looking at a different temperature and environment over time to help model our predictions based on the changing environment this animal is experiencing.”

Worldwide students’ climate strike today

This video says about itself:

School strikes were held across Australia today, 15 March 2019, but it was the students, not the teachers, leading the charge. The strikes were held to demand more meaningful climate action from the government; something the organising students believe to be truly lacking.

In Sydney, thousands of students congregated at Town Hall Square to demand more action on the world’s climate change disaster. Students then marched to Hyde Park through the city streets, many of which were closed down for the march. It’s the second nationwide strike since November 2018 and there’s no sign of them stopping anytime soon.

Australia joins 111 other countries who have taken up the charge in the name of climate action. Sydney’s rally organiser, Jean Hinchliffe told Student Edge at November’s march that students would keep striking and making their voices heard until the government takes real action to curb the effects of climate change. “We’re definitely not stopping here; there’s a lot to organise from here,” Jean said.

This video, from Gisborne, in New Zealand, is called School Strike for Climate.

This video from France today is called LIVE: Students call for massive strike in Paris against climate change.

This video is called Fridays For Future: Live 15 March 2019 Climate Strike From Stockholm Sweden.

This video from Wales, where the weather was bad, is called Youth Climate Strike Swansea March 15th 2019.

This tweet from the Netherlands is about striking pro-climate students in Maastricht city today.

A new study published in Ecology Letters is using observations made by Henry David Thoreau — 19th-century American naturalist, social reformer, and philosopher — to explore the effects of climate change on tree leaf-out and, as a result, the emergence of spring wildflowers: here.