Use of unfertilised margins on intensively managed grassland by
... to mid-June) in which chicks can feed and find cover (Schekkerman & Beintema 2007, Schekkerman & Müskens 2000, Oosterveld unpubl. data). Redshanks will also benefit from this, because their chicks also make frequent use of tall grass. However, in modern dairy farming it is a problem to ensure that t ...
... to mid-June) in which chicks can feed and find cover (Schekkerman & Beintema 2007, Schekkerman & Müskens 2000, Oosterveld unpubl. data). Redshanks will also benefit from this, because their chicks also make frequent use of tall grass. However, in modern dairy farming it is a problem to ensure that t ...
Full text in pdf format
... depth gradient, and the community became dominated by polychaetes, nematodes and nemerteans. Seawards, within the relict sediments (deeper than 25 m), species richness and abundance decreased again. The community patterns also changed in response to the occurrence of strongly hydrodynamic episodes ( ...
... depth gradient, and the community became dominated by polychaetes, nematodes and nemerteans. Seawards, within the relict sediments (deeper than 25 m), species richness and abundance decreased again. The community patterns also changed in response to the occurrence of strongly hydrodynamic episodes ( ...
15. NEW WORLD NECTAR-FEEDING VERTEBRATES
... open forest (temperate pine and oak woodlands, clearings, open habitats), or wet forest (tropical rain forest, cloud forest). To quantify the morphological diversity of bats and hummingbirds at the 29 and 32 sites, respectively, we calculated arithmetic means and coefficients of variation (= standar ...
... open forest (temperate pine and oak woodlands, clearings, open habitats), or wet forest (tropical rain forest, cloud forest). To quantify the morphological diversity of bats and hummingbirds at the 29 and 32 sites, respectively, we calculated arithmetic means and coefficients of variation (= standar ...
Ecosystems - Scouts Canada
... examples. Then ask them what kinds of animals they would expect to find in each of those habitat types. Name some species that could exist in more than one type of habitat. Name some species that depend on one specific habitat. 2. At about 30 metres from the starting line, set up the buckets or bo ...
... examples. Then ask them what kinds of animals they would expect to find in each of those habitat types. Name some species that could exist in more than one type of habitat. Name some species that depend on one specific habitat. 2. At about 30 metres from the starting line, set up the buckets or bo ...
Roskilde University 1 - Roskilde University Digital Archive
... dynamics of the three species from a Danish location, but the comparison between habitats could have been bettered had data on climate i.e., temperature, humidity and rainfall been included. This would have made it possible to compare tendencies between years. In general the interpretation of condit ...
... dynamics of the three species from a Danish location, but the comparison between habitats could have been bettered had data on climate i.e., temperature, humidity and rainfall been included. This would have made it possible to compare tendencies between years. In general the interpretation of condit ...
Western Screech-Owl kennicottii subspecies,Megascops kennicottii
... This small owl has shown serious declines in the southern part of its range in Metro Vancouver, Victoria and the Gulf Islands areas, where it has nearly disappeared over the last 10 to 15 years. Based on observed declines reported in Alaska, it has likely also declined in the northern part of its ra ...
... This small owl has shown serious declines in the southern part of its range in Metro Vancouver, Victoria and the Gulf Islands areas, where it has nearly disappeared over the last 10 to 15 years. Based on observed declines reported in Alaska, it has likely also declined in the northern part of its ra ...
White-chinned Petrel Procellaria aequinoctialis
... The distribution and abundance of P. aequinoctialis off western South America was examined over several seasons by Spear et al. (2005) [58]. Procellaria aequinoctialis were observed in high densities near the continental slope in spring (breeding) and autumn (non-breeding) rather than in the pelagic ...
... The distribution and abundance of P. aequinoctialis off western South America was examined over several seasons by Spear et al. (2005) [58]. Procellaria aequinoctialis were observed in high densities near the continental slope in spring (breeding) and autumn (non-breeding) rather than in the pelagic ...
Four decades of research on the Medes Islands
... Summary. It has been over thirty years since the publication of the first major study about the natural environment of Medes Islands. The data collected in that first study entitled Els sistemes naturals de les illes Medes (The natural systems of Medes Islands) and the conclusions drawn from its ana ...
... Summary. It has been over thirty years since the publication of the first major study about the natural environment of Medes Islands. The data collected in that first study entitled Els sistemes naturals de les illes Medes (The natural systems of Medes Islands) and the conclusions drawn from its ana ...
pest risk assessment - Department of Primary Industries, Parks
... range of arid to semi-arid habitats in the interior of Queensland, New South Wales, Victoria, South Australia and the Northern Territory. The species is common and widespread throughout its Australian range and is not listed on the IUCN Red List of Threatened Species. Central bearded dragons are com ...
... range of arid to semi-arid habitats in the interior of Queensland, New South Wales, Victoria, South Australia and the Northern Territory. The species is common and widespread throughout its Australian range and is not listed on the IUCN Red List of Threatened Species. Central bearded dragons are com ...
Focus in Action Learning Pack
... them. Nowadays, resources are transported throughout the world, as the demand gets higher. Lifestyle changes over time have increased the pressure on different environments and the ecosystems we live in. Needs are basic to survival, whereas, ' wants ' are things that just make survival more comforta ...
... them. Nowadays, resources are transported throughout the world, as the demand gets higher. Lifestyle changes over time have increased the pressure on different environments and the ecosystems we live in. Needs are basic to survival, whereas, ' wants ' are things that just make survival more comforta ...
INTERNATIONAL RELATIONS, BIODIVERSITY LOSS, AND THE
... of severe degradation, affecting its ability to provide ecosystem services, and even deplete populations of key native species (Charles 2008). Considering each of the aforementioned ways in which biodiversity loss can be rapidly accelerated by human actions, conservation and protection efforts to ha ...
... of severe degradation, affecting its ability to provide ecosystem services, and even deplete populations of key native species (Charles 2008). Considering each of the aforementioned ways in which biodiversity loss can be rapidly accelerated by human actions, conservation and protection efforts to ha ...
Louisiana Alligator Management Program
... issued based on the population estimates derived from nest counts. Furthermore, information such as landowner, hunter or farmer, length, and shipper are recorded for every wild alligator harvested in compliance with state and federal rules for crocodilian management. Export of alligator skins and pr ...
... issued based on the population estimates derived from nest counts. Furthermore, information such as landowner, hunter or farmer, length, and shipper are recorded for every wild alligator harvested in compliance with state and federal rules for crocodilian management. Export of alligator skins and pr ...
A novel soil manganese mechanism drives plant species loss with
... the biomass of the community are driven primarily by these two co-dominant species. In contrast to biomass responses, there was a linear reduction in total species richness with increasing N addition rate (Fig. 1d). Further, N addition also had different effects on species richness of forbs and gras ...
... the biomass of the community are driven primarily by these two co-dominant species. In contrast to biomass responses, there was a linear reduction in total species richness with increasing N addition rate (Fig. 1d). Further, N addition also had different effects on species richness of forbs and gras ...
CALIFORNIA`S DESERTS, PART 1: BIOLOGY AND ECOLOGY
... by the expansive landscapes and mesmerized by the seemingly empty yet colorful mountains, dry lake beds, and sweeping plateaus. Later, when I returned as a researcher exploring on foot, I had the gift of time to see closely, to witness change over the course of days and seasons. During my first dese ...
... by the expansive landscapes and mesmerized by the seemingly empty yet colorful mountains, dry lake beds, and sweeping plateaus. Later, when I returned as a researcher exploring on foot, I had the gift of time to see closely, to witness change over the course of days and seasons. During my first dese ...
as a PDF
... Generally negative interactions are more frequent in the early development stages or in disturbed conditions. In the development and evolution of ecosystem, negative interactions are minimized in favour of positive interactions. The negative interaction can increase natural selection resulting in ne ...
... Generally negative interactions are more frequent in the early development stages or in disturbed conditions. In the development and evolution of ecosystem, negative interactions are minimized in favour of positive interactions. The negative interaction can increase natural selection resulting in ne ...
Report No. 178 A review of wood ants (Hymenoptera: Formicidae) in
... Why make the effort to conserve wood ants? Apart from having intrinsic value in their own right, the importance of wood ants to the forest ecosystem is well known. They affect the distribution and abundance of other ants and many other ground-dwelling, underground and canopy species, harbour a wide ...
... Why make the effort to conserve wood ants? Apart from having intrinsic value in their own right, the importance of wood ants to the forest ecosystem is well known. They affect the distribution and abundance of other ants and many other ground-dwelling, underground and canopy species, harbour a wide ...
Chapter 7: Ecological Life Histories
... each species is doomed to local extinction; the two strategies of “escape to somewhere else” or “wait until the right habitat reappears” are alternative ways of meeting the deterioration of the local habitat (Harper 1977). Harper’s words articulate the options available to most plants, including tre ...
... each species is doomed to local extinction; the two strategies of “escape to somewhere else” or “wait until the right habitat reappears” are alternative ways of meeting the deterioration of the local habitat (Harper 1977). Harper’s words articulate the options available to most plants, including tre ...
Sonoran Desert Tortoise Natural History
... In 1989, the Mojave population of the desert tortoise was emergency listed as endangered under the Endangered Species Act (ESA). Based on the best data available and conservation actions being implemented at the time, the status was changed to threatened in 1990. In the following year, the U.S. Fish ...
... In 1989, the Mojave population of the desert tortoise was emergency listed as endangered under the Endangered Species Act (ESA). Based on the best data available and conservation actions being implemented at the time, the status was changed to threatened in 1990. In the following year, the U.S. Fish ...
Elf owl
... Wheel Camp, and Wiley’s Well. Cardiff (1980) reports that the Coon Hollow location is doubtful and the Wiley’s Well location is erroneous, and explains that both records were outside the breeding season, and that the Coon Hollow location is based on an auditory detection and Wiley's Well is based on ...
... Wheel Camp, and Wiley’s Well. Cardiff (1980) reports that the Coon Hollow location is doubtful and the Wiley’s Well location is erroneous, and explains that both records were outside the breeding season, and that the Coon Hollow location is based on an auditory detection and Wiley's Well is based on ...
Desert rodent populations: factors affecting
... growth that follow favorable rains is well established. The ultimate reason for this pattern has not been established. Competition is important as well, but predation and parasitism have received little consideration. Distribution: Patterns of distribution have been shown to correspond to temperatur ...
... growth that follow favorable rains is well established. The ultimate reason for this pattern has not been established. Competition is important as well, but predation and parasitism have received little consideration. Distribution: Patterns of distribution have been shown to correspond to temperatur ...
Streaked Horned Lark Habitat Characteristics
... annual changes in agricultural uses or management result in changes in habitat suitability for larks. These changes are primarily driven by between year crop changes within a given field, the degree of seasonal flooding, crop health, and agricultural treatments within season (e.g., herbicide treatme ...
... annual changes in agricultural uses or management result in changes in habitat suitability for larks. These changes are primarily driven by between year crop changes within a given field, the degree of seasonal flooding, crop health, and agricultural treatments within season (e.g., herbicide treatme ...
Comparative ecology of desert small mammals: a
... is to pursue manipulative studies over shorter periods, commonly (but not always) in experimental enclosures. This approach requires a metric for assessing the magnitude of competition under different experimental conditions and to this end J. S. Brown (1988, 1989b) developed the concept of giving-u ...
... is to pursue manipulative studies over shorter periods, commonly (but not always) in experimental enclosures. This approach requires a metric for assessing the magnitude of competition under different experimental conditions and to this end J. S. Brown (1988, 1989b) developed the concept of giving-u ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.