Environment for the Uninformed Imperiled Planet: Restoring Our Endangered Ecosystems E. Goldsmith P. Bunyard N. Hildyard P. McCully

BioScience ◽  
1991 ◽  
Vol 41 (9) ◽  
pp. 643-643
Author(s):  
Samuel N. Luoma
Keyword(s):  
Endangered Ecosystems

Ecology of moss-dwelling rotifers in a raised bog: Differentiation of rotifer communities in microhabitats

Biologia ◽  
2017 ◽  
Vol 72 (2) ◽  
Author(s):  
Irena Bielańska-Grajner ◽  
Tomasz Mieczan ◽  
Anna Cieplok
Keyword(s):  
Species Richness ◽  
Moisture Content ◽  
Dominant Species ◽  
Peat Bogs ◽  
Raised Bog ◽  
Ecological Relationships ◽  
Seasonal Factors ◽  
The Stability ◽  
Endangered Ecosystems ◽  
Rotifer Communities

AbstractPeat bogs play key roles in preserving the stability of ecological relationships, but are some of the fastest disappearing and most endangered ecosystems in Europe. The aims of this study were: (1) to compare the distribution, species richness, diversity, and density of rotifers in microhabitats of a raised bog; and (2) to verify the hypothesis that rotifer density and species composition are dependent on seasonal factors, moss moisture content, and the dominant species of mosses in the microhabitats. Sampling was done monthly from April to November in 2013–2014 in the bog Moszne in eastern Poland (51°27′28.7″ N, 23°07′15.8″ E). The microhabitats sampled included hummocks, slopes, and hollows. A total of 40 rotifer taxa were identified. The highest species richness occurred in the hollows (40), dominated by

scholarly journals Selective top-down control of epiphytic biomass by amphipods from Posidonia oceanica meadows: implications for ecosystem functioning

2020 ◽  
Vol 145 (2) ◽  
Author(s):  
Loïc N. Michel ◽  
Patrick Dauby ◽  
Alessandra Dupont ◽  
Sylvie Gobert
Keyword(s):  
Ecosystem Functioning ◽  
Posidonia Oceanica ◽  
Seagrass Species ◽  
Coastal Zones ◽  
Top Down ◽  
Essential Components ◽  
Mutualistic Relationship ◽  
N Enrichment ◽  
Adequate Data ◽  
Endangered Ecosystems

Mediterranean Posidonia oceanica meadows shelter an important biomass and biodiversity of amphipod crustaceans that graze on epiphytes. However, their actual significance for ecosystem functional processes is hard to estimate, due to the lack of adequate data. Here, a field microcosm-based inclusion experiment was used to test if three of the dominant taxa of the amphipod community (Apherusa chiereghinii, Dexamine spiniventris and Gammarus spp.) could exert top-down control on seagrass leaf epiphytes. Influence of amphipod activity on nutrient availability for the host species was also investigated. All grazer taxa significantly reduced biomasses of erect macroalgae and erect sessile animals present on leaves. None of them consumed encrusting epiflora or epifauna. This selective top-down control could have important implications for the structure of the epiphytic community on leaves of P. oceanica, which is one of the most diverse and abundant of all seagrass species. Grazing activity of all taxa caused higher N content of seagrass leaves, likely through amphipod excretion and/or sloppy feeding. Since P. oceanica meadows often grow in oligotrophic zones where plant growth can be nutrient-limited, this N enrichment could enhance seagrass production. Overall, the ecological interaction between P. oceanica and amphipods could be seen as a facultative mutualistic relationship. Our results suggest that amphipod mesograzers are key-elements in some of the functional processes regulating these complex and yet endangered ecosystems, which are essential components of Mediterranean coastal zones.

Sandy Beaches as Endangered Ecosystems

2021 ◽  
Author(s):  
Sílvia C. Gonçalves ◽  
Susana M.F. Ferreira
Keyword(s):  
Sandy Beaches ◽  
Endangered Ecosystems

Biological Hotspots and Endangered Ecosystems

2013 ◽  
pp. 73-115
Author(s):  
Reed F. Noss
Keyword(s):  
Endangered Ecosystems

scholarly journals Ground Water Dependence of Endangered Ecosystems: Nebraska’s Eastern Saline Wetlands

Ground Water ◽  
2007 ◽  
Vol 45 (6) ◽  
pp. 736-752 ◽  
Author(s):  
F. Edwin Harvey ◽  
Jerry F. Ayers ◽  
David C. Gosselin
Keyword(s):  
Ground Water ◽  
Saline Wetlands ◽  
Endangered Ecosystems

Price Premiums for Eco-friendly Commodities: Are ‘Green’ Markets the Best Way to Protect Endangered Ecosystems?

2005 ◽  
Vol 32 (3) ◽  
pp. 419-438 ◽  
Author(s):  
Paul J. Ferraro ◽  
Toshihiro Uchida ◽  
Jon M. Conrad
Keyword(s):  
Price Premiums ◽  
Endangered Ecosystems

The most endangered ecosystems in the world? Conservation of riverine biodiversity in Asia

2002 ◽  
Vol 28 (1) ◽  
pp. 59-68 ◽  
Author(s):  
David Dudgeon
Keyword(s):  
World Conservation ◽  
The World ◽  
Endangered Ecosystems

scholarly journals Threatened Biodiversity, the NEMA EIA Regulations and Cultivation of Virgin Land: More of the Sorry Same?

2017 ◽  
Vol 10 (3) ◽  
pp. 27
Author(s):  
CC De Villiers
Keyword(s):  
Environmental Management ◽  
Decision Making ◽  
Legal Protection ◽  
Western Cape ◽  
Environmental Decision Making ◽  
Virgin Land ◽  
Legal Questions ◽  
Key Issues ◽  
National Environmental ◽  
Endangered Ecosystems

The environmental impact assessment (EIA) regulations published in terms of the National Environmental Management Act 107 of 1998 (NEMA) have extended an unprecedented degree of environmental oversight into the domain of agricultural decision-making. However, threatened Cape flora occurring in remnants of less than three hectares in extent will be denied such protection pending their incorporation in a national list of threatened ecosystems. Until such listing, unresolved legal questions that inhibited the effective consideration of biodiversity in agricultural decision-making prior to the promulgation of the NEMA EIA regulations are likely to persist—to the detriment of a globally imperilled biodiversity.    This contribution sets out to identify some of the key issues that inhibited mainstreaming of biodiversity in agri-environmental decision-making in the Western Cape.  It also attempts to show that the NEMA EIA dispensation has inherited some problems in respect of cultivation that would result in the transformation or removal of less than three hectares of vegetation in Critically Endangered and Endangered ecosystems—which, until listed in terms of biodiversity law, will have no legal protection. Lastly, the contribution provides an analysis of, and suggest a number of options for ensuring that biodiversity is given its appropriate due in the issuing of cultivation permits that otherwise may contribute to the further degradation and loss of some of the most threatened elements of the globally unique Cape flora.  

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