Measuring at 14 centimeters (5.5 inches), a new spider discovered in the sand dunes of Israel is the largest of its kind in all of the Middle East. How it avoided detection until now in one of the world' longest inhabited—and explored—regions is likely due, at least in part, to the species' entire habitat consisting of only three square kilometers.

Dwelling in the Sands of Samar in the southern Arava region of Israel, the spider, called Cerbalus aravensis, is already greatly endangered due to development plans. Rezoning for agriculture and sand quarries has already reduced the spiders' dunes by more than half: from seven square kilometers to three.

"The discovery of this new spider illustrates our obligation to preserve the dune," says Dr. Shanas from the University of Haifa, who headed the team of scientists.

The habitat is under direct threat as the Israel Land Administration is moving ahead to renew mining projects in the Sands of Samar. Shanas says that the spider may not be the only species hiding from science for millennia among the dunes and that they should be preserved for their biological richness.

"The new discovery shows how much we still have to investigate, and that there are likely to be many more species that are unknown to us. If we do not preserve the few habitats that remain for these species, they will become extinct before we can even discover them," Dr. Shanas concludes.

Little is known about the spider's biology, but researchers say it is nocturnal and active during the hottest months. The species lives in an underground den covered over by a door of glued together sand particles.

Taken from: www.mongabay.com

Balikpapan Bay in East Kalimantan is home to an incredible variety of ecosystems: in the shallow bay waters endangered dugong feed on sea grasses and salt water crocodiles sleep; along the bay proboscis monkeys leap among mangroves thirty meters tall and Irrawaddy dolphins roam; beyond the mangroves lies the Sungai Wain Protection forest; here, the Sunda clouded leopard hunts, sun bears climb into the canopy searching for fruits and nuts, and a reintroduced population of orangutans makes their nests; but this wilderness, along with all of its myriad inhabitants, are threatened by a plan to build a bridge and road connecting the towns of Penajam and Balikpapan.

The bridge, known as Pulau Balang, would span the bay, splicing through Balang Island, cutting off the mangroves from the rainforest, and running the entire length of the western edge of the protected forest. While the direct impacts would be severe—deforestation for the road, splitting the mangrove from the rainforest, damage to the reef—researchers say that providing people easy access to the mangrove and forests will inevitably destroy them.

"The most serious threats are the indirect ones, notably opening an uncontrollable access to the whole area," Stanislav Lhota, a primatologist with the University of South Bohemia, told mongabay.com.

Map showing proposed road and bridge and shorter alternative (larger image at the end of the article). Image courtesy of Stanislav Lhota.

The project "will open access for settlements, farming, illegal logging, more land speculation, subsequent forest fires, poaching of wildlife, illegal logging. In effect it will cause the destruction of the mangrove area and all wildlife there, but also (slow but certain) destruction of the western side of the Sungai Wain forest," Dr. Gabriella Fredriksson says. Fredriksson, an expert on sun bears, has worked on managing and conserving the Sungai Wain Protection Forest for over a decade.

"The destruction of the mangroves will also impact the fragile marine wildlife in the [Balikpapan] bay and fisheries due to destruction of fish breeding areas," adds Dr. Danielle Kreb of the local NGO RASI, who has studied the marine mammals in Balikpapan Bay for several years and noticed that the Irrawaddy dolphins’ core habitat is in the vicinity of Pulau Balang.

Despite the clear environmental impact outlined by conservationists, the provincial and federal governments support the project. Local governments, however, have signalled over the past couple months that they oppose the project, especially since there is an alternative plan that would threaten none of the ecosystems, and in addition provide a far shorter route between Penajam to Balikpapan.

A lost wilderness?

Sungai Wain protected forest. Photo by: Marian Bartos.

If the Pulau Bridge project goes ahead, Balikpapan Bay will be forever changed. The already shallow bay will face erosion and sedimentation from construction work on the surrounding hills, making the bay less accessible for large boats and leading to more frequent flooding of the coastal villages. Species in the bay, such as dugongs, crocodiles, and green sea turtles—already affected by sedimentation—would likely face further impacts from pollution.

The mangroves—an ecosystem that has faced heavy losses worldwide—would be severely impacted as well. The green corridors allowing species to move between the mangrove ecosystem and the Sungai Wain protection forest will be altogether broken.

"Fauna such as proboscis monkeys and many other species cannot survive in long term in mangroves alone," Lhota explains. "They need regular access to the neighboring forest where they find numerous key resources. Mangroves alone are rather inhospitable environment with only limited food sources. If they are isolated from other forests, they may apparently survive but they will gradually turn into a lifeless stand of Rhizophora trees."

The eventual loss of the mangroves also threatens the local fishing trade since fish require the mangrove forest for breeding: the mangrove stand in question is the last place for fish in the bay to breed.

"East Kalimantan only has a small mangrove area left, because much of the mangrove area [has] already [been] converted to shrimp ponds and industry. And on Balikpapan, [this] is [the] last mangrove forest," says Ade Fadli of BEBSiC, a local conservation group.

The road connecting the bridge to Balikpapan would next pass along the western edge of the Sungai Wain forest reserve, the last major stand of dipterocarp trees along the south and central coast. While the direct impact of road building to the forest reserve would likely be minimal, the road would open the reserve to "illegal logging, land clearance, and above all, forest fires," according to Lhota.

Fire is the most significant threat to the forest. While tropical forests rarely burn under natural conditions, human impacts in Indonesia has left a scar of burning across Kalimantan. Sungai Wain contains the last unburnt primary forest in the area; in 1998 devastating fires spilled across the region, but only burnt a part of Sungai Wain.

"The [Sungai Wain] forest, which was burned only once, regenerates well but becomes highly prone to subsequent fires due to the decrease in humidity and huge quantities of highly flammable dead wood," Lhota explains. "If it burns a second time, it can no longer regenerate easily. With the current tendency of governments to consider such forest as 'lost forever', it is likely to be doomed to further encroachment and conversion."

Home to over 100 mammal species and over 250 bird species, the loss of the forest would devastate tropical species, including a population of reintroduced orangutans.

In addition, the forest is as a catchment source of clean water for the state-owned oil company Pertamina, and the Kariangau Baru industrial area. The loss of the forest would endanger the water needs of these industries, which uses it for cooling in refineries and drinking for employees.

The Sungai Wain forest "is the last watershed covered with forest and hence supplying freshwater on an ongoing basis. The water from this reserve has been used for the oil industry and its workers/households (which make up almost 20 percent of the population in Balikpapan) since 1945," Fredriksson explains.

According to Lhota, Balikpapan Bay has huge ecotourism and education potential which has largely gone untapped.

Taken from: www.mongabay.com

Gone: a look at extinction over the past decade

Amphibian Armageddon: The past few decades have been particularly perilous for amphibians. Devastated by a still-mysterious disease, the chytrid fungus, and hit by climate change, habitat loss, and pollution, the particularly-sensitive family of amphibians is in the midst of an extinction crisis.

The Kihansi spray toads mating in captivity. Photo by: Rhett A. Butler.

The Kihansi spray toad vanished from its home in the middle of the decade. Living adjacent to a waterfall and gorge in Tanzania, the toad survived on only two hectares of land, but when the World Bank built a dam in the area, the flow of the waterfall was changed and the toad could no longer thrive in the altered habitat. Surveys found fewer and fewer toads until they found none.

Like many amphibians that vanish from the wild, a population of Kihansi spray toads still survives in captivity in the United States. Reintroduction would only be possible if their native habitat can be made to support the toads again.

The Panamanian golden frog—a beautiful black and gold species—also likely vanished from the wild during the last years of the decade. A national symbol in Panama, the frog was devastated by the chytrid fungus and habitat destruction. Like the Kihansi spray toad, the Panamanian golden frog survives in captivity, but its future is hardly secure.

These are but a small representation: researchers estimate that more than 120 species of amphibians have likely gone extinct since 1980. With climate change scenarios growing increasingly dire, rampant deforestation, continuing pollution, and no cure yet to the chytrid fungus, it's unlikely the 2010s will be any better for amphibians.

The Panamanian golden frog with green infant. Photo by: Rhett A. Butler.

The Vanished Forgotten: While extinctions of mammals, birds, and amphibians garner the most media attention (in that order), invertebrates and plants are vanishing just as frequently.

Sometime between the end of the 1990s and during the beginning of this decade, the last Aldabra banded snail succumbed to desiccation. Little-known, this snail was endemic to the Aldabra atoll. Since the snail hibernates during dry periods, less rainfall over the Aldabra atoll due to global warming likely spelled its doom.

Another invertebrate lost to climate change is the European land leech. A survey between 2000-2005 found only a single living European land leech. The researchers believe that a rise of 3 degrees Celsius during the summertime has doomed the leech, which is adapted specifically to the cold.

Climate-sensitive species from polar bears to pikas to frogs to coral reefs are facing an uphill battle to survive in our warmer world. Extinctions due to climate change will likely become even more common in the next decade.

Illustration of the St. Helena olive. Drawing by: John Charles Meliss (1875).

Invertebrates are not the only little-known and often overlooked species. Plant extinctions—or discoveries for that matter—rarely make the news. In December 2003, the last St. Helena olive died in captivity. Prior to this, the species had vanished from the wild in 1994.

Endemic to St. Helena Island, the St. Helena olive perished from deforestation and the introduction of alien species like goats. No one knows how many plants have vanished during 2000-2009, but with high rates of rainforest destruction in many nations, it is likely that a large number of plants—many unknown to science—were lost in the last ten years.

Goodbye and maybe hope?: The last known wild Spix's macaw disappeared from Brazil in 2000. This beautiful macaw was battered by habitat loss and trapping for the pet trade. It is possible some wild macaws still remain, but more surveys are necessary. Still, even if no wild Spix's macaws remain, the species has a chance.

A small population of Spix's macaws survive in captivity and there has been recent success at reproduction, especially at Al Wabra Wildlife Preserve which has bred 21 birds since 2004. In addition, Al Wabra has purchased Spix's macaw habitat in Brazil for possible future reintroduction.

Spix's Macaw probably has the most hope of surviving the next ten years of any of these twelve. For the unfortunate others, this decade was their last stand.



List of (likely) extinct species, 2000-2009:

Baiji (Lipotes vexillifer)
Chinese paddlefish (Psephurus gladius)
'Alala (Corvus hawaiiensis)
Poo-uli (Melamprosops phaeosoma)
Pyrenean ibex (Capra pyrenaica pyrenaica)
Western black rhinocerous (Capra pyrenaica pyrenaica)
Kihansi Spray Toad (Nectophrynoides asperginis)
Panamanian golden frog (Atelopus zeteki)
Aldabra banded snail (Rachistia aldabrae)
The European land leech (Xerobdella lecomtei)

Taken from: www.mongabay.com