From above, an intact forest can look reassuringly complete. A satellite image may show an unbroken canopy, a block of green still standing amid plantations, roads or logged land. For many conservation programs, that view has become the starting point for measurement. If the canopy remains, the forest is often treated as if much of its ecological value remains as well. The forest itself may tell a more complicated story. Birds, insects, frogs and primates divide the day among them. Some call at dawn, others at night. Some occupy narrow frequency bands; others fill the background with a steady rasp. A forest that looks intact can still lose part of this living structure. The canopy may close after logging. Carbon may remain on a balance sheet. The animal community may not return in the same form. Garnet Pitta. Photo by Hanyrol Hanyzan Ahmad Sah A new paper in Global Change Biology, by Zuzana Buřivalová and colleagues, examines that problem through sound. The study describes the Soundscape Baselines Project, an effort to record the acoustic signatures of some of the world’s remaining intact forests before those reference points become harder to find. The idea is straightforward. To know whether a forest has changed, one needs to know what it sounded like before the change. That baseline is not only a technical convenience. It is a guard against a familiar problem in conservation: each generation tends to accept the nature it first encountered as normal. Daniel Pauly called this shifting baseline syndrome…This article was originally published on Mongabay

Tuna offer a useful case study for World Ocean Day because their recovery has come through the least sentimental parts of conservation: quotas, enforcement, stock assessments, and years of difficult diplomacy. By the early 2010s, several tuna stocks were in serious trouble. Atlantic bluefin had become a marker of overfishing. Pacific bluefin had fallen to a small fraction of its historic abundance. The risk was ecological and commercial. Governments were looking at the possible collapse of one of the world’s most valuable fisheries. The response was slow, contested, and often technical. Regional fisheries bodies tightened catch limits, improved monitoring, began adopting automated harvest rules, and expanded electronic catch-documentation systems to make illegal and unreported fishing harder to hide. Fleets built around high catches had to accept lower quotas. The politics were difficult because the countries involved often had competing economic interests. That is part of what makes the outcome worth studying. Atlantic bluefin are showing strong signs of recovery, backed by decades of tagging, catch data, and population modeling. Pacific bluefin reached a key rebuilding target years ahead of schedule. Across commercial tuna fisheries, a much larger share of global catch now comes from stocks assessed as being at healthy levels. This does not mean the oceans have returned to abundance. Some stocks, particularly Indian Ocean yellowfin, remain in poor condition. Rebuilding to 20% of historic biomass is a critical scientific milestone for safety, not total restoration. Bycatch of sharks, turtles, and seabirds remains a serious problem, and some regional…This article was originally published on Mongabay

The short-eared dog is one of the Amazon’s least-known carnivores. In Bolivia, it’s also one of the hardest to find. The species has a fox-like snout, small rounded ears, partially webbed toes, and a long bushy tail that often drags on the forest floor. In Spanish, it’s sometimes called perro fantasma, or ghost dog, a name that reflects how rarely even field biologists encounter it. A long-running camera-trap study has now brought the species into sharper focus, reports Iván Paredes Tamayo. Over more than two decades, researchers recorded the short-eared dog in Bolivia’s lowland Amazonian forests, in piedmont forests near the Andes, and in large protected and Indigenous-managed landscapes. The results suggest the animal may be present in more places than earlier records showed. That is useful evidence, although it doesn’t make the species common. It remains scarce, elusive, and closely linked to well-preserved forest. For conservation groups, land managers, and funders, the findings suggest the short-eared dog depends on large, connected areas of habitat. Small forest fragments are unlikely to provide what it needs. Its presence can help identify places where forests are still functioning well, especially where protected areas and Indigenous territories keep intact habitat at scale. The finding also shows why long-term monitoring matters. Rare species are easy to miss in short surveys. A camera trap may sit for months without recording one. A study that runs across years, landscapes, and management types can reveal patterns that would otherwise remain hidden. The short-eared dog will probably never…This article was originally published on Mongabay

Thomas Crowther begins his book with a snakebite that was not, in any conventional sense, dangerous. The danger came from interpretation. A misidentified species, a surge of fear, and a body that responded as if the threat were real: numbness spread, panic intensified, and the situation escalated until a second opinion dissolved it almost instantly. The episode is more than an anecdote. It sets the terms of Nature’s Echo, a book that treats cause and effect not as linear sequences so much as loops that can amplify themselves in either direction. Thomas Crowther That idea—feedback loops as the underlying architecture of the natural world—is the organizing principle of the book. Crowther traces it from cosmology to ecology to human psychology, moving across scales with considerable ambition. The early chapters move outward from the origin of matter, suggesting that the same reinforcing processes that allowed stars to form also underpin biological evolution and social behavior. It is an ambitious framing. At its best, it brings a sense of coherence to subjects that are often treated separately. At times, the scope of the framework requires readers to travel across very different domains and scales of thought. The structure reflects that expansiveness. The table of contents alone signals the range: from “Cause and Effect” and “Feedback Loops” through “Resilience and Tipping Points” and into “The Story We Tell Ourselves.” The progression is deliberate. Crowther starts with physical systems, moves into ecological stability, and then into the social and psychological domains where perception begins…This article was originally published on Mongabay