نتایج جستجو برای: native fishes
تعداد نتایج: 120415 فیلتر نتایج به سال:
Anthropogenic habitats are increasingly prevalent in coastal marine environments. Previous research on sessile epifauna suggests that artificial habitats act as a refuge for nonindigenous species, which results in highly homogenous communities across locations. However, vertebrate assemblages that live in association with artificial habitats are poorly understood. Here, we quantify the biodiver...
Understanding factors related to the occurrence of species across multiple spatial and temporal scales is critical to the conservation and management of native fishes, especially for those species at the edge of their natural distribution. We used the concept of hierarchical faunal filters to provide a framework for investigating the influence of habitat characteristics and nonnative piscivores...
Pumpkinseed Lepomis gibbosus (L.) are successful invaders in Europe, where this species exerts multiple ecological effects, mainly through trophic interactions. Behavioural interference represents a potential impact for native fauna and this is of particular conservation concern in the Iberian Peninsula because of the highly valuable endemic fauna inhabiting streams of this region. However, agg...
Despite long-standing interest of terrestrial ecologists, freshwater ecosystems are a fertile, yet unappreciated, testing ground for applying community phylogenetics to uncover mechanisms of species assembly. We quantify phylogenetic clustering and overdispersion of native and non-native fishes of a large river basin in the American Southwest to test for the mechanisms (environmental filtering ...
Abstract The parasite fauna of alien fish species living in the new habitats has rarely been investigated and there is still poor information about this topic. This research not only provides a thorough list taxa found non-indigenous Turkey, but it highlights risk infection for both native ichthyofauna. With respect range, exotic fishes imported into Turkey have to be hosts parasities from Eura...
The paper presents an analysis of biogeographic and habitat distribution patterns, the conservation status data Adriatic fishes, based on last published checklist evidence-based critical analyses species presence. total number recorded in is 449. has 58.8% Mediterranean richness, 76.1% its families, 87.8% orders. Among discovered after 2010, twelve were attributed to biological invasion, mostly...
Freshwater fishes are in a serious state of decline across the world, making them one most threatened groups vertebrates. The Danube River catchment area Europe holds richest freshwater fish community, but our knowledge current distribution these species is limited. Transylvania, largest region Romania, important tributaries Danube, from where 77 and two lamprey were recorded until now. Despite...
Many estuarine and freshwater ecosystems worldwide have undergone substantial changes due to multiple anthropogenic stressors. Over the past two decades, the Sacramento-San Joaquin Delta (Delta) in California, USA, saw a severe decline in pelagic fishes, a shift in zooplankton community composition, and a rapid expansion of invasive aquatic vegetation. To evaluate whether major changes have als...
Indo-Pacific lionfish (Pterois volitans and P. miles) have spread swiftly across the Western Atlantic, producing a marine predator invasion of unparalleled speed and magnitude. There is growing concern that lionfish will affect the structure and function of invaded marine ecosystems, however detrimental impacts on natural communities have yet to be measured. Here we document the response of nat...
1he present paper is an attempt to interpret some of the data on fish growth available in the literature, emphasis beiI1g given to a reassessment of von Bertalanffy's theory of growth as applied to fishes. In that theory, grQwth is defined as the net result of twO processes with opposite teI)dencies, one synth¢sizing native protein (anabolism), the other ~egrading it (catabolism). Both food and...
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