This video says about itself:
16 May 2018
This video says about itself:
23 September 2017
10 NUMBERS THAT EXPLAIN THE DEVASTATION IN PUERTO RICO Between 80 to 90 percent of homes are destroyed in certain areas.
TRUMP FINALLY TWEETED ABOUT PUERTO RICO And bashed the U.S. territory’s debt and lack of infrastructure. Needless to say, Twitter was appalled. [HuffPost]
This video says about itself:
22 September 2017
This video says about itself:
23 September 2017
This is the harsh reality Dominica is living through after being hit by a destructive hurricane.
This video from the USA says about itself:
25 July 2014
Nature and science documentarian David Attenborough describes the effort to screen a newly rediscovered collection of amber from the Dominican Republic and the tiny grasshopper found in 20-million-year-old amber that was named for him. Researchers at the Illinois Natural History Survey at the University of Illinois are scouring more than 160 pounds (72 kg) of the Dominican amber for ancient fossils. When their work is completed, they will have the largest unbiased amber fossil collection in the world. The most valuable specimens will be digitized and made freely available on a website. The amber was collected by INHS entomologist Milton Sanderson in the late 1950s. Sanderson died in 2012.
For more information about the pygmy locust discovery: here.
For more information about the researchers’ work on the amber collection: here.
From Oregon State University in the USA:
Monkey business produces rare preserved blood in amber fossils
April 3, 2017
Summary: Two monkeys grooming each other about 20-30 million years ago may have helped produce a remarkable new find – the first fossilized red blood cells from a mammal, preserved so perfectly in amber that they appear to have been prepared for display in a laboratory.
Two monkeys grooming each other about 20-30 million years ago may have helped produce a remarkable new find — the first fossilized red blood cells from a mammal, preserved so perfectly in amber that they appear to have been prepared for display in a laboratory.
The discovery, published in the Journal of Medical Entomology, also describes the only known fossils of a type of parasite that still exists today, Babesia microti, which infects the blood cells of humans and other animals.
Two small holes in the back of a blood-engorged tick, which allowed blood to ooze out just as the tick became stuck in tree sap that later fossilized into amber, provide a brief glimpse of life in a tropical jungle millions of years ago in what is now the Dominican Republic.
“These two tiny holes indicate that something picked a tick off the mammal it was feeding on, puncturing it in the process and dropping it immediately into tree sap,” said George Poinar, Jr., professor emeritus in the College of Science at Oregon State University, author of the study and an international expert on plant and animal life forms found preserved in amber.
“This would be consistent with the grooming behavior of monkeys that we know lived at that time in this region. The fossilized blood cells, infected with these parasites, are simply amazing in their detail. This discovery provides the only known fossils of Babesia-type pathogens.”
The fossil parasites add to the history of the Order Piroplasmida, of which the Babesiidae is one family. In humans, the parasite B. microti can cause babesiosis, a disease with symptoms that resemble malaria and can be fatal. A related parasite in cattle can cause Texas cattle fever, which has been a historic problem in the plains states, and just this spring is causing another outbreak that has led to quarantines on more than 500,000 acres of land in Texas.
“The life forms we find in amber can reveal so much about the history and evolution of diseases we still struggle with today,” Poinar said. “This parasite, for instance, was clearly around millions of years before humans, and appears to have evolved alongside primates, among other hosts.”
Part of what makes these fossils unique, Poinar said, is the clarity by which the parasites and blood cells are preserved, almost as if they had been stained and otherwise treated in a laboratory for inspection. The parasites were different enough in texture and density to stand out clearly within the red blood cells during the natural embalming process for which amber is famous.
A salamander found preserved in amber from the Dominican Republic is the first-ever fossil of its kind, and also shows that salamanders once lived in the Caribbean region, where they now are all extinct: here.
Irreplaceable – Sierra de Bahoruco, Dominican Republic
By BirdLife News, 18 Oct 2016
Located on the southern border separating the Dominican Republic and Haiti, this Important Bird and Biodiversity Area (IBA) supports many different subtropical forest types including montane pinelands, sub-humid forests and the severely threatened broadleaf forests (including cloud and humid forests). Sierra de Bahoruco’s natural ecosystems hold more than 40 globally threatened (many endemic) species including endangered birds such as the Black-capped Petrel Pterodroma hasitata, La Selle Thrush Turdus swalesi, Bicknell’s Thrush Catharus bicknelli and Hispaniolan Crossbill Loxia megaplaga; six Critically Endangered frogs and two Endangered endemic land mammals – the Hispaniolan solenodon Solenodon paradoxus and hutia Plagiodontia aedium.
But this diverse IBA is in danger of being lost. The strongest of the many threats is illegal agriculture encroachment by local land owners and immigrant Haitian farmers, which threatens in particular the biodiverse-rich humid broadleaf forests on the southern slopes that are home to many of the endemic and migratory species. Other threats include forest fires due to agriculture and charcoal making, heavy use of agrochemical products and illegal taking of birds, mainly parrots.
Grupo Jaragua (BirdLife in the Dominican Republic) has been working at Sierra de Bahoruco since 2003, developing a wide range of activities to respond to these challenges. They have been working with local communities to encourage sustainable activities like ecotourism and bee-keeping, and carrying out research, species and habitat monitoring, reforestation, land purchase in the buffer zone of the Park, and advocacy. As a result of their successful media campaign highlighting the effect of encroachment on the Park, the Government has established a committee of key stakeholders to repare a Strategic Conservation Plan for the Park.
The Plan is being developed in consultation with local communities, including those responsible for illegal activities and it is expected to be ready by October this year. Conservation action will follow, so fingers crossed!
This is a story of the Sierra de Bahoruco National Park, in the Dominican Republic, told in the new feature-length documentary Death By A Thousand Cuts. The award-winning film, co-directed by Juan Mejia Botero and Jake Kheel, winds its way through the Park’s misty mountains and dry forest slopes. It takes us into the homes and hearts of people who protect the forest, people who live by cutting it, and people caught in the middle: here.
Fossils reveal how bizarre mammal [Solenodon] beat extinction: here.
This video says about itself:
Cyclura ricordi – Video Learning – WizScience.com
11 September 2015
The “Hispaniolan ground iguana“, “Ricord’s ground iguana”, “Ricord’s rock iguana”, or “Ricord’s iguana” is a critically endangered species of rock iguana.
It is found on the island of Hispaniola, and is the only known species of rock iguana to coexist with the rhinoceros iguana. Its natural habitat is dry savanna within three subpopulations in the southwestern Dominican Republic. It is threatened by habitat loss due to agricultural encroachment.
Its generic name is derived from the Ancient Greek “cyclos” meaning “circular” and “ourá” meaning “tail”, after the thick-ringed tail characteristic of all “Cyclura” iguanas. Its specific name is a Latinized form of French Biologist, Alexandre Ricord’s last name; Ricord first wrote of the species in 1826.
Ricord’s iguana is a large species of rock iguana with a body length of 49–51 cm in males and 40–43 cm in females with an equally long tail. Ricord’s iguana’s toes are articulated to be efficient in digging and climbing trees.
Their body color is a grayish green flat color marked by five to six bold pale gray chevrons alternating with dark gray to black chevrons. In adults, the dark chevrons are less contrasting than in juveniles. Ricord’s iguana’s eyes have a dark almost black iris and red sclera.
This species, like other species of “Cyclura”, is sexually dimorphic; males are larger than females, and have more prominent dorsal crests as well as larger femoral pores on their thighs, which are used to release pheromones.
Digging deep to save Rock Iguana
By Ali North, 13 Sep 2016
This robust, prehistoric looking species is fighting for survival with all populations covering an area of less than 100 km2.
The soil is hot to touch, the temperature reaches over 37° C in the early morning hours, and someone is covered in dust, lying face down on the ground with their head in a hole in the sand. Not an uncommon sight in certain areas of dry forest on the Caribbean island of Hispaniola.
What could at best be considered unusual behaviour, or even mistaken for illegal activity – egg stealing, a threat facing many reptiles across the globe, is a scientist – Dr Stesha Pasachnik – conducting vital research to help save a large reptile from extinction. The Ricord’s Rock Iguana Cyclura ricordii is a stocky, prehistoric looking creature that occurs in just four sub-populations on Hispaniola (an island shared by the Dominican Republic and Haiti).
Classified as Critically Endangered on the IUCN Red List, the species is fighting for its survival, with a total range of less than 100 km2 and an uncertain global population estimate of fewer than 4,000 individuals. The threats facing this island endemic are broad, and are exacerbated by its restricted range: illegal hunting, predation and disturbance by introduced mammals, agricultural expansion and charcoal production are all ramping up the pressure.
In the early 2000s, a Species Recovery Plan was developed by the IUCN and its implementation brought together five partner organisations. Grupo Jaragua (BirdLife in the Dominican Republic) was one, whose contributions have been instrumental in building a greater understanding of the species and raising environmental awareness among local communities. Ground surveys have revealed the existence of a handful of critical nesting sites, including a population in Haiti that was previously thought to be extinct. These sites, locally called fondos, are small areas with deep dirt/clay soils where the iguanas can dig and lay their eggs in synchrony with the rainy season.
One of the most dense concentrations of iguana nests is Fondo de La Tierra, a conservation area of 26 hectares purchased in 2010 by Grupo Jaragua with funding from the International Iguana Foundation. Since 2006, four fondos have seen a three-fold increase in Ricord’s Rock Iguana nest numbers. Research by Grupo Jaragua, INTEC University in Santo Domingo, Mississippi State University and San Diego Zoo’s Institute for Conservation Research is helping to better understand population size, genetics and the ecology of this and another iguana – the Vulnerable Rhinoceros Iguana Cyclura cornuta. This explains the dust-covered scientists, excavating nests to determine hatching success and retrieve temperature loggers.
Using camera traps and frequent field surveys, Grupo Jaragua has also been able to document and help control one of the many threats facing Ricord’s Rock Iguana: invasive alien species. These include cattle and donkeys (which degrade iguana habitat) and cats, dogs, and mongoose. (which prey upon iguana hatchlings and adults). President of Grupo Jaragua, Yolanda León, adds:
“We are also documenting the severe habitat destruction caused by charcoal production and have been actively involved in advocacy activities to reduce this illegal activity. We are working with journalists, filmmakers, and social media to document and expose the situation”.
Grupo Jaragua has trained 400 teachers about the species’ ecology and the importance of iguana conservation to help foster positive attitudes towards the species, while the use of native and endemic plants in an agroforestry programme, alongside the promotion of bee-keeping as a biodiversity friendly activity, is ensuring that critical habitat for iguanas, birds and other wildlife will remain for generations to come. To ensure the future of Ricord’s Rock Iguana and the habitat it relies on, conservation organisations on the island really are having to dig deep. However, through a huge collaborative effort involving research, land protection and local engagement, there is now genuine optimism that the decline can be reversed.
This is just one of many non-avian species that are the focus of work by the BirdLife Partnership across the globe. A recent survey, supported by the Aage V Jensen Charity Foundation, revealed that 74% of BirdLife Partners are conducting work that benefits or focuses on taxa beyond birds. Over 370 projects were identified worldwide, with Grupo Jaragua’s work on Ricord’s Rock Iguana being just one of over sixty projects involving reptiles.
Rhinoceros iguanas: here.
This video says about itself:
Dominican amber with insect fossils under a microscope
23 April 2012
Dominican amber differentiates itself from Baltic amber by being nearly always transparent, and it has a higher number of fossil inclusions. This has enabled the detailed reconstruction of the ecosystem of a long-vanished tropical forest.
Dominican amber dates from Oligocene to Miocene, thus about 25 million years old.
From Oregon State University in the USA:
Ancient flowering plant was beautiful, but probably poisonous
February 15, 2016
Researchers today announced the discovery of the first-ever fossil specimens of an ‘asterid‘ — a family of flowering plants that gave us everything from the potatoes to petunias and our morning cup of coffee. …
Researchers today announced in the journal Nature Plants the discovery of the first-ever fossil specimens of an “asterid” — a family of flowering plants that gave us everything from the potato to tomatoes, tobacco, petunias and our morning cup of coffee.
But these two 20-30 million-year-old fossil flowers, found perfectly preserved in a piece of amber, came from the dark side of the asterid family — they belong to the genus Strychnos, which ultimately gave rise to some of the world’s most famous poisons, including strychnine and curare.
Poisons that would later find their way into blow-gun weapons, rat control, Sherlock Holmes stories and the movie “Psycho” appear to have had some of their ancestral and biological roots in the prehistoric jungles of what’s now the Dominican Republic, researchers say.
“The specimens are beautiful, perfectly preserved fossil flowers, which at one point in time were borne by plants that lived in a steamy tropical forest with both large and small trees, climbing vines, palms, grasses and other vegetation,” said George Poinar, Jr., a courtesy professor in the College of Science at Oregon State University, and one of the world’s experts on plant and animal life forms preserved in amber.
“Specimens such as this are what give us insights into the ecology of ecosystems in the distant past,” Poinar said. “It shows that the asterids, which later gave humans all types of foods and other products, were already evolving many millions of years ago.”
Asterids, the researchers noted in this study, are among Earth’s most important and diverse plants, with 10 orders, 98 families, and about 80,000 species. They represent about one-third of all the Earth’s diversity of angiosperms, or flowering plants.
And one ancient genus, which has now been shown to be inherently toxic, existed for millions of years before humans appeared on the planet.
“Species of the genus Strychnos are almost all toxic in some way,” Poinar said. “Each plant has its own alkaloids with varying effects. Some are more toxic than others, and it may be that they were successful because their poisons offered some defense against herbivores.
“Today some of these toxins have been shown to possess useful and even medicinal properties.”
As natural poisons that humans came to understand and use, two extracts from plants in the Strychnos genus ultimately became famous — strychnine and curare.
Strychnine had practical uses for decades as a pesticide, and was often the deadly component of rat poison. But it also captured the imagination of writers, and was used by Norman Bates in the movie “Psycho” to kill his mother and her male companion. In small doses, it can increase mental and muscular activity.
Curare has an even stranger history. Sir Walter Raleigh may have first encountered it in 1596 when he observed poison arrows in South America, where natives also developed the poison in blow-gun darts to paralyze hunted prey. Curare was featured as the murder weapon in one Sherlock Holmes novel, and in lower doses it has been used as a muscle relaxant in surgery.
There are now about 200 species of Strychnos plants around the world, in forms ranging from shrubs to trees and woody climbing vines, mostly in the tropics. They are still being studied for medicinal properties, such as for the treatment of parasitic worm infections and even as drugs to treat malaria.
The discovery of these two fossil flowers, researchers said, suggests that many other related plant families could have evolved in the Late Cretaceous in tropical forests. Their fossil remains, however, still await discovery.
The co-author of this study, Lena Struwe, is an expert on plants in the strychnine family, Loganaceae, and is a plant biologist at Rutgers University.
This 2008 video is called Birds and Nature of the Dominican Republic.
Tentative first steps for forest restoration in the Caribbean
By Veronica Anadon, Tue, 15/09/2015 – 10:47
The rapid deforestation of a Dominican Republic National Park is finally receiving the attention it deserves from the country’s authorities and civil society, thanks to a project which is addressing the root causes of its destruction.
The forest of the Sierra de Bahoruco National Park is an Important Bird and Biodiversity Area, including the only known nesting site for the Endangered Black-capped Petrel and one of the most important wintering refuges for Bicknell’s Thrush (Vulnerable). It is also home to an enormous number of Caribbean endemic species, including La Selle Thrush, Hispaniolan Crossbill, Hispaniolan Amazon and Hispaniolan Parakeet as well as the shrew-like Hispaniolan Solenodon. Yet despite its protected status, the forest has suffered huge forest clearance from illegal farming.
In just 15 years, nearly a third of the forest on the southern side of the Park has been converted to agriculture. Land has been appropriated to put in place sharecropping systems and large avocado plantations exploiting cheap labour, using large quantities of agrochemicals, or clear felling for charcoal.
All this began to change when the Aage V Jensen Charity Foundation came in to support Grupo Jaragua, (BirdLife in the Dominican Republic). The Foundation made timely land purchases to link Bahoruco with neighbouring Jaragua National Park, has directed public opinion and outrage at this situation and is supporting a strategic planning planning process to save Bahoruco alongside the Ministry of the Environment and other key stakeholders, including the farmers.
To get to this point, Grupo Jaragua conducted surveys to establish and map the most critical areas for wildlife, existing farms, and understand the causes of deforestation. It raised awareness of the Park’s importance and its vulnerability, and, working with a national newspaper, it exposed the situation.
Changing attitudes and winning support from local communities is fundamental to the Park’s long-term future. The project targeted them with TESSA – BirdLife’s Toolkit for Ecosystem Service Site-based Assessment. Communities were given a chance to air their views and concerns, as well as being shown how much they depended on the forest. They were taught about the forest’s role in preventing soil erosion, helping water retention, and preventing floods. And four communities were given support in establishing biodiversity-friendly farming and forestry enterprises, such as growing wild oregano and producing local honey.
These are the tentative first steps in the difficult task of halting deforestation and restoring these damaged forests.