Gastropod samples were collected during expeditions to caves in Bahia state, northeastern Brazil, and are studied herein. Collection took place over the past five years, and gastropods were found in 14 caves distributed across six different municipalities: Campo Formoso, Carinhanha, Coribe, Feira da Mata, Central, and Ituaçu. A total of 19 species-level taxa of terrestrial and freshwater gastropods ...

The catalogued collection of South American terrestrial gastropods, including the Caribbean ABC islands and Trinidad & Tobago, of the Auckland War Memorial Museum (AM), New Zealand, is discussed here. In total, 264 specimen lots from South America were found in the AM collection, including eight type lots. Twelve of the specimens represent new geographic distribution data, including the first ...

This review provides a synopsis of the main findings of individual papers in the special issue <i>Terrestrial Biodiversity in a Rapidly Changing Arctic</i>. The special issue was developed to inform the <i>State of the Arctic Terrestrial Biodiversity Report</i> developed by the Circumpolar Biodiversity Monitoring Program (CBMP) of the Conservation of Arctic Flora and Fauna (CAFF), Arctic Council ...

Evaluating the effectiveness of conservation actions is challenging for migratory species because a population can be impacted anywhere along its route. Conservation actions for the critically endangered Fennoscandian lesser white-fronted goose population include culling of red foxes in the breeding area and habitat improvements and reduction of illegal hunting in the non-breeding areas. One goal ...

There is scientific consensus that the archipelago of Svalbard is warming up faster than other parts of the planet. People who live in or regularly visit this part of the European high Arctic observe and experience these changes in a subjective and relational manner. This article illustrates how perceptions of environmental change are enmeshed with our ways of interacting with water(s) and dwelling ...

River ecosystems receive and process vast quantities of terrestrial organic carbon, the fate of which depends strongly on microbial activity. Variation in and controls of processing rates, however, are poorly characterized at the global scale. In response, we used a peer-sourced research network and a highly standardized carbon processing assay to conduct a global-scale field experiment in greater ...

Vegetation indices are corner stones in vegetation monitoring. However, previous field studies on lichens and NDVI have been based on passive sensors. Active handheld sensors, with their own light sources, enables high- precision monitoring under variable ambient conditions. We investigated the use of handheld sensor NDVI for monitoring pale lichen cover across three study sites from boreal heathlands ...

1. Actuarial senescence, the decline of survival with age, is well documented in the wild. Rates of senescence vary widely between taxa, to some extent also between sexes, with the fastest life histories showing the highest rates of senescence. Few studies have investigated differences in senescence among populations of the same species, although such variation is expected from population-level ...

Acanthobdellida gnaw into the sides of salmonid fishes in frigid Arctic lakes and rivers, latching on with fearsome facial hooks. Sister to leeches, they are an ancient lineage with two described species. Unfortunately, Acanthobdellida are rarely collected, leading to a paucity of literature despite their unique morphology. Populations range from Eurasia to Alaska (USA), but few specimens of ...