scholarly journals Climate velocity in inland standing waters

2020 ◽  
Vol 10 (12) ◽  
pp. 1124-1129
Author(s):  
R. Iestyn Woolway ◽  
Stephen C. Maberly
Keyword(s):  
Climate Velocity ◽  
Standing Waters

scholarly journals Future climate and land use instability can negate the benefits of protected areas

2021 ◽  
Author(s):  
Ernest Asamoah ◽  
Linda Beaumont ◽  
Joesph M Maina
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Protected Areas ◽  
Multiple Scales ◽  
Future Climate ◽  
Spatially Adaptive ◽  
Climate Stress ◽  
Potential Benefits ◽  
High Conservation ◽  
Climate Velocity

Abstract Expanding protected area networks and enhancing their capacities is currently one avenue at the forefront of efforts to conserve and restore global biodiversity. Climate and habitat loss resulting from land use interact synergistically to undermine the potential benefits of protected areas (PAs). Targeting conservation, adaptation and mitigation efforts requires an understanding of patterns of climate and land-use change within the current arrangement of PAs, and how these might change in the future. In this paper, we provide this understanding using predicted rates of temporal and spatial displacement of future climate and land use globally and within PAs. We show that ~ 47% of the world’s PAs—10.6% of which are under restrictive management—are located in regions that will likely experience both climate stress and land-use instability by 2050. The vast majority of these PAs are also distributed across moist biomes and in high conservation value regions, and fall into less-restrictive management categories. The differential impacts of combined land use and climate velocity across protected biomes indicate that climate and land-use change may have fundamentally different ecological and management consequences at multiple scales. Taken together, our findings can inform spatially adaptive natural resource management and actions to achieve sustainable development and biodiversity goals.

scholarly journals Uncontrolled Draining of Rainwater and Health Consequences in Yaoundé – Cameroon

2009 ◽  
Vol 19 (2) ◽  
pp. 20-30
Author(s):  
Nguendo Yongsi H.B. ◽  
Ntetu Lutumba A. ◽  
Bryant R. Christopher ◽  
Ojuku Tiafack ◽  
Hermann Thora M.
Keyword(s):  
Cross Sectional Study ◽  
Town Planning ◽  
Health Consequences ◽  
Cross Sectional ◽  
Urban Waste ◽  
Sub Saharan ◽  
Space Dynamics ◽  
Set Up ◽  
Standing Waters ◽  
The City

Context: Like many sub Saharan African cities, Yaoundé is experiencing a faster growth of its population and urban perimeter. The urban population has grown from 812 000 inhabitants in 1987 to 2 100 000 inhabitants in 2006. However, this population growth has not been monitored by the city planners and decision makers. Accordingly, the city is lacking basic urban facilities. such as a good sewage system to evacuate urban waste water. Objective: This paper aims at addressing health consequences resulting from inadequate management of rainwater in Yaoundé. Material and methods: From the data gathered by us in the framework of the PERSAN programme focused on urban health, a cross sectional study has been carried out in 2002 and 2006 across the city. Based on socio-environmental and medical surveys, the study covered neighborhoods and 3 034 households in Yaoundé. Results: It comes out that that the present urban draining network is outdated and ineffective. This has led to increasing fl oods in several sectors of the city, with health hazards. It has been noted that many diarrheal diseases in Yaoundé are related to the poor sanitation resulting from urban waste coupled with standing waters. Conclusion: We are of the opinion that to solve this problem, there is urgent need to set up a new town-planning mechanism which takes into account the city’s demographic and space dynamics.

Standing Waters, Especially Ancient Lakes

2020 ◽  
pp. 280-302
Author(s):  
Kristina von Rintelen ◽  
Patricio De los Ríos ◽  
Thomas von Rintelen
Keyword(s):  
Species Diversity ◽  
Ancient Lakes ◽  
Ecological Data ◽  
Widespread Species ◽  
Research Priority ◽  
Trophic Morphology ◽  
Molecular Phylogenetic ◽  
Standing Waters ◽  
Species Flocks

Crustacea in standing waters are a diverse taxonomic assemblage with representatives in all available habitats from the benthic zone to the pelagial in larger water bodies. While most higher taxa are widespread and occasionally cosmopolitan, this is only partially true at the genus and species level. The crustacean fauna of geologically young lakes, or ponds, is characterized by widespread species that are not even necessarily restricted to lentic habitats. These species generally have good to excellent dispersal capabilities, especially those dwelling in ephemeral habitats. Small groups such as branchiopods and copepods dominate under these conditions among obligate still-water dwellers. In contrast, endemism and occasional striking adaptations are the hallmarks of crustacean species flocks, especially in the radiations of amphipods, decapods, and ostracods in the fewer than 10 ancient lakes worldwide. These radiations have arisen in situ through the diversification of unspecialized ancestors. All comparatively well-studied radiations for which molecular phylogenetic, taxonomic, and ecological data are available show particular adaptations of trophic morphology correlated to specific habitats. Prime examples are the species flocks of amphipods in Lake Baikal and of atyid shrimps in Lake Tanganyika and in two Indonesian lakes. These groups have most likely evolved through adaptive radiation. A major challenge for research on crustaceans in ancient lakes, and in standing waters generally outside Europe and North America, is the lack of basic data from species diversity to genetics for many, if not most, taxa. Getting a grip on species diversity, distributions, ecology, and, at a different level, genomics will be a research priority for coming decades.

New water mites species (Acariformes: Hydrachnidia) from the Far East of Russia

Zootaxa ◽  
2009 ◽  
Vol 2241 (1) ◽  
pp. 1-21
Author(s):  
PETR V. TUZOVSKIJ ◽  
KSENIA A. SEMENCHENKO
Keyword(s):  
Far East ◽  
Mite Species ◽  
Far East Of Russia ◽  
Water Mites ◽  
Water Mite ◽  
The Far East ◽  
Standing Waters

Illustrated descriptions of five water mite species, Sperchon (Hispidosperchon) nevelskoii sp. n., Teutonia (Subteutonia) minor sp. n., Lebertia (Mixolebertia) sokolowi sp. n., Mixobates amurensis sp. n. and Feltria (Feltria) orientalis sp. n., from running and standing waters of the Far East of Russia are presented.

Riethia (Kieffer 1917) (Diptera: Chironomidae) revised for the Austro-Pacific region

Zootaxa ◽  
2019 ◽  
Vol 4646 (3) ◽  
pp. 461-500 ◽  
Author(s):  
PETER S. CRANSTON
Keyword(s):  
New Zealand ◽  
Adult Male ◽  
New Caledonia ◽  
Molecular Data ◽  
Molecular Evidence ◽  
Pacific Region ◽  
South American Species ◽  
Standing Waters ◽  
Flowing Waters ◽  
Male Pupa

Riethia Kieffer, known previously from New Zealand for a species stated to be also in Australia plus several Australian and South American species, is revised for the Austro-Pacific region. The three previously-described Australian species Riethia stictoptera Kieffer (the genotype), Riethia cinctipes Freeman and Riethia plumosa Freeman are distinct and valid, and are redescribed in all stages. In contrast, Riethia zeylandica Freeman now is restricted to New Zealand: Australian specimens previously allocated to R. zeylandica belong to several new species recognised on morphology of adult male, pupa and larva, with guidance from molecular data. Most belong to a widespread eastern Australian Riethia azeylandica sp. n.: others are allocated to Riethia hamodivisa sp. n., Riethia paluma sp. n., Riethia phengari sp. n. and Riethia queenslandensis sp. n., each with a more restricted range. From Western Australia three species, Riethia donedwardi sp. n., Riethia noongar sp. n. and Riethia wazeylandica sp. n., are described as new from adult male, pupa and larva. Riethia kakadu sp. n. is described from the monsoonal tropics of Northern Territory from the adult male and tentatively associated pupa. From New Caledonia a reared species is described as Riethia neocaledonica sp. n.. Illustrated identification keys are provided for the males, pupae and larvae. Unassociated larvae that key to reared described species are excluded from type status, and based on morphology and molecular evidence three unreared larval types, ‘A’, ‘B’ and ‘C’, are also described and keyed. Previously reported molecular vouchers are reviewed, and certain Genbank accessions re-identified. Extensive data shows Riethia are distributed almost throughout Australia from standing and flowing waters, from tropics and subtropics to cool temperate Tasmania, but probably only in permanent and standing waters. The immature stages of several taxa can co-occur: as many as four can be found simultaneously in one site. Terminology of the volsellae of the male genitalia and the dorsal head and maxilla of the larva is reviewed. 

scholarly journals Diversity of Odonata (Insecta) larvae in streams and farm ponds of a montane region in southern Brazil

2013 ◽  
Vol 13 (3) ◽  
pp. 259-267 ◽  
Author(s):  
Mateus Marques Pires ◽  
Carla Bender Kotzian ◽  
Marcia Regina Spies ◽  
Damaris Battistel Neri
Keyword(s):  
New Records ◽  
Temperate Climate ◽  
Southern Brazil ◽  
Farm Ponds ◽  
Artificial Ponds ◽  
Standing Waters

This study presents an inventory of the genera of Odonata found in streams and artificial farm ponds in a montane region, with temperate climate, in southern Brazil. Differences in richness of lotic and lentic environments were also investigated. The diversity of odonate families and genera in southernmost Brazil is lower than in warmer, either tropical or subtropical, regions of the country. Nine genera are new records for the region and six genera had their geographical ranges extended to regions with temperate climate of the Neotropics. The overall richness and especially the overall abundance recorded in the studied area are possibly determined by the occurrence of numerous farm ponds because natural standing waters are scarce in the region. The presence of macrophytes in these artificial ponds allowed the establishment of a diversified odonatofauna, typical of lentic environments.

Re-established after hundred years: Definition of Hygrobates prosiliens Koenike, 1915, based on molecular and morphological evidence, and redescription of H. longipalpis (Hermann, 1804) (Acariformes, Hydrachnidia, Hygrobatidae)

2019 ◽  
Vol 24 (8) ◽  
pp. 1490-1511 ◽  
Author(s):  
Vladimir Pešić ◽  
Lukasz Broda ◽  
Miroslawa Dabert ◽  
Reinhard Gerecke ◽  
Peter Martin ◽  
...  
Keyword(s):  
Original Description ◽  
Point Of View ◽  
Morphological Evidence ◽  
Running Waters ◽  
Dna Barcodes ◽  
Morphological Examination ◽  
Western Palaearctic ◽  
Definition Of ◽  
Standing Waters ◽  
European Populations

DNA-barcodes reveal that European populations attributed to Hygrobates longipalpis (Hermann, 1804), thus far considered a common inhabitant of standing and slowly flowing running waters all over the Western Palaearctic, represent two distinct lineages, both widely distributed over the continent. They are differentiated also from an ecological point of view, with specimens from standing waters ("clade I") separated from specimens collected in slowly running waters ("clade II"). Morphological examination revealed that, based on the length ratio of proximo- and distomedial setae on terminal segments of fourth legs, two morphospecies correspond to these two clades. As molecular examination of a specimen from the type locality of H. prosiliens Koenike, 1915 (Bremen, Heiligenrode) shows that it belongs to "clade I", populations from standing waters are attributed to that species. In view of the sketchy original description, loss of holotype and insufficient locality data of H. longipalpis, we arbitrarily assign to it stream-dwelling populations of "clade II" and designate a neotype.

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