Showing papers in "Biological Conservation in 1994"

TL;DR: Experiments on nest site provision provide examples of different factors acting successively to limit breeding density at different levels, because shortage of nest sites must also limit the total numbers of breeders and non-breeders.

TL;DR: It is reported that family richness is a good predictor of species richness for a variety of groups and regions, including both British ferns and British butterflies among 100 km × 100 km (10,000 km2) grid squares, and Australian passerine birds among 5° × 5° grid squares.

TL;DR: In this paper, the authors analyse the metapopulation structure of three species of butterflies in regions where they are endangered, i.e., Melitaea cinxia in Finland and Hesperia comma and Plebejus argus in the UK.

TL;DR: In this article, the authors investigated microclimate and vegetation edge effects in five podocarp-broadleaf forest fragments in the North Island of New Zealand and found that some species-specific edge/interior differences could be related to timing of critical life history stages relative to the temporal stability of edge microclimate regimes.

TL;DR: This paper criticises some reserve selection algorithms that have recently been published in Biological Conservation and have rapidly become enshrined in the principle of complementarity.

TL;DR: In this paper, public attitudes towards snow leopard Panthera uncia predation of domestic livestock were investigated by a questionnaire survey of four villages in snow-leopard habitat within the Annapurna Conservation Area, Nepal.

TL;DR: Assemblages of abundant native rodents appeared more intensively structured in fragments than in unfragmented forest, with strong competitive interactions occurring between ecologically similar species in fragments.

TL;DR: This is the first study documenting contemporary mortality in an amphibian population with identification of the attributed pathogenic species and it is suggested that this fungal infection could also be a major contributor to other amphibian populations declines.

TL;DR: A total of 1960 seeds were collected from 304 tourist vehicles entering Kakadu National Park at monthly intervals between May 1989 and May 1990 as mentioned in this paper, but most cars carried one or no seeds.

TL;DR: In this paper, an algebraic method for estimating highway mortality in snakes, based on careful data collection during low-speed driving on paved roads, was presented, and a total of 368 snakes (104 live, 264 dead) were recorded over four years on State Route 85 from Why to Lukeville, Pima Co., Arizona, during 15 525 km of road-cruising; mostly within Organ Pipe Cactus National Monument.

TL;DR: The unique plant and animal communities of the French subantarctic islands have been greatly modified by the introduction of mammals since their discovery in 1552 and 1772 and measures are being taken to control or eradicate alien species populations.

TL;DR: In this article, the use of fencerow corridors by the eastern chipmunk Tamias striatus was studied to identify the elements of corridor quality for an animal species. But the authors did not consider the effect of habitat attributes on the number of transients.

TL;DR: It is shown that completely isolated forest fragments up to at least 1 ha in size became entirely edge habitat shortly after logging, which supports the view that changes in small fragments are mainly driven by external factors.

TL;DR: The bear population in Sweden appeared to have increased at a stable rate of about 1·5% annually during the past 50 years, and relative densities within the female core areas varied from 50 to 100% of those in similar habitats in European Russia.

TL;DR: Evidence points to a decrease in the dispersal efficiency of Spanish juniper in SF, suggesting that the processes leading to reduced dispersal ability might be inherent to fragmentation and represent a threat for the survival of fruit-bearing plants in patchy environments.

TL;DR: This paper examined the distribution of the Bay checkerspot butterfly and native grassland plant species across 27 habitat patches in the San Francisco Bay area in an effort to determine the value of the butterfly as an "umbrella species".

TL;DR: A sustainable hunt in Tahuayo region of the Reserva Comunal Tamshiyacu-Tahuayano of northeastern Peru appears to be overharvesting primates and lowland tapir Tapirus terrestris, but is apparently not overexploiting artiodactyls and large rodents as mentioned in this paper.

TL;DR: Under certain conditions (re) colonization of habitat areas by dispersal along a long, ribbon-like habitat might occur, and for each species the specific features of such a corridor is discussed.

TL;DR: It is concluded that better documentation of catches and new approaches to dealing with porpoise/gillnet interaction problems are needed in order to prevent the loss of several species and populations.

TL;DR: Spatial patterns in densities and population size structures of three large benthic carnivorous fishes, and behaviour of one of these species, were compared in different parts of the Cape Rodney to Okakari Point Marine Reserce, northeastern New Zealand.

TL;DR: In spite of the introduction of biological control agents, no significant vertebrate or invertebrate herbivory was found at any life stage of the Sierra foothills population; however, vertebrate Herbivory significantly decreased biomass of the northern coast C. scoparius .

TL;DR: Succulent thicket is an important centre of endemism for succulents and geophytes, both inside and outside reserves, and this component is threatened by megahervibore and goat grazing, respectively.

TL;DR: The presence of low-altitude specialists at Montagne d'Ambre clearly demonstrates the need to conserve the lower altitude peripheral forests which are most vulnerable to encroachment and degradation.

TL;DR: It is considered that the Seychelles warbler will soon no longer be a globally threatened species after the presence now of three healthy breeding populations.

TL;DR: The butterfly usually breeds in damp, acidophilous grassland but spread onto calcicolous grass land during the present century, probably due to a general relaxation in grazing pressure combined with a switch from sheep to cattle grazing, is almost as high on protected as on unprotected sites.

TL;DR: The corresponding Probabilistic measure derived here is shown to be monotonically related to PD, and so provides a further probabilistic rationale for phylogenetic diversity as an indicator of underlying feature diversity patterns among taxa.

TL;DR: In the Camargue delta, the species composition of aquatic habitats has changed from diversified Mediterranean to monospecific continental-type communities, resulting in losses of biological diversity at the intra- and inter-habitat, as well as at the Mediteranean and continental levels.

TL;DR: It is concluded that the beavers will not enhance the succession to a more mixed forest, because they selectively remove non-willow tree species.