Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Luis A Vélez-Espino"'
Autor:
Luis A Vélez-Espino
Publikováno v:
Revista de Biología Tropical, Vol 54, Iss 2, Pp 623-638 (2006)
In conservation biology there is a basic need to determine habitat suitability and availability. Astroblepus ubidiai (Siluriforms), the only native fish in the highlands of Imbabura province in the Ecuadorian Andes, was abundant in the past in the Im
Externí odkaz:
https://doaj.org/article/e7c93ed703fb4874ac601e344dd29394
Publikováno v:
Theoretical Population Biology. 85:1-11
Partial migration is a widespread phenomenon characterized by migrant and resident forms from the same population. In phenotypically plastic taxa with indeterminate growth, resident and migrant ecophenotypes can differ in size and life history traits
Autor:
Marten A. Koops, Luis A. Vélez-Espino
Publikováno v:
Ecological Modelling. 247:319-326
Population recovery targets are a pressing need for the conservation and management of species at risk, and demographic sustainability, expressed as the size of a minimum viable population (MVP), is frequently used to guide conservation efforts. Here
Publikováno v:
Fisheries Oceanography. 22:14-31
Pacific Northwest Chinook, Oncorhynchus tshawytscha, have exhibited a high degree of variability in smolt-to-adult survival over the past three decades. This variability is summarized for 22 Pacific Northwest stocks and analyzed using generalized lin
Publikováno v:
Biological Conservation. 144:1068-1080
Tools restricting the movements of invasive species (e.g. barriers) and reducing habitat fragmentation for native species (e.g. corridors, fishways) provide examples where actions taken to address one environmental concern can hinder efforts to addre
Publikováno v:
Biological Invasions. 12:3861-3875
Most introduced non-native species fail to establish as a result of mortality or reproductive failure. An established population can increase the probability of survival and reproductive success of newly introduced individuals by reducing both Allee
Autor:
Luis A. Vélez-Espino, Marten A. Koops
Publikováno v:
Aquatic Conservation: Marine and Freshwater Ecosystems. 19:676-688
1. When a species is identified for conservation, often the only way to effect recovery is to reduce the harm imposed by stressors threatening the survival of the species. Ideally all threats would be removed; however, this is often not feasible or p
Autor:
Luis A. Vélez-Espino, Marten A. Koops
Publikováno v:
Reviews in Fish Biology and Fisheries. 20:163-186
American eel, Anguilla rostrata, is a catadromous fish that spawns in the Sargasso Sea and migrates to coastal waters and freshwater systems ranging from Greenland down the Atlantic coast to South America and has been regarded as comprising a panmict
Autor:
Luis A. Vélez-Espino, Marten A. Koops
Publikováno v:
North American Journal of Fisheries Management. 29:1065-1090
Significant declines in the abundance of lake sturgeon Acipenser fulvescens across most of its North American range have led to abundances less than 10% of estimated minimum sustainable population sizes and, in some locations, less than 1% of histori
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 66:261-276
The International Maritime Organization has proposed ballast water discharge standards to reduce densities of taxa transported in ballast water. While reduced propagule pressure will almost certainly lower the risk of species introductions, we ask if