COSEWIC assessment and status report on the Behr`s Hairstreak
... Behr’s Hairstreak has one generation per year; the flight period is from mid-May through late July and peaks in mid-June. Eggs are laid singly on the leaves and branches of Antelope-brush where they overwinter. The eggs hatch in early spring, and the larvae develop from late March to late May and pu ...
... Behr’s Hairstreak has one generation per year; the flight period is from mid-May through late July and peaks in mid-June. Eggs are laid singly on the leaves and branches of Antelope-brush where they overwinter. The eggs hatch in early spring, and the larvae develop from late March to late May and pu ...
Biodiversity and Ecosystem Services in Agroecosystems
... affects flows of ecosystem services and disservices (or diminution of naturally occurring services) from production landscape to surrounding areas. Services from agriculture include provisioning services (food, fuel, fiber, and biochemicals) as well as carbon sequestration, soil conservation, cultural ...
... affects flows of ecosystem services and disservices (or diminution of naturally occurring services) from production landscape to surrounding areas. Services from agriculture include provisioning services (food, fuel, fiber, and biochemicals) as well as carbon sequestration, soil conservation, cultural ...
Distribution and Habitat Associations of Spotted Ratfish (Hydrolagus
... for understanding how species are distributed and for the proper implementation of successful management strategies. The spotted ratfish (Hydrolagus colliei), is a deep water species of the Chimaeridae family occurring along the west coast of the United States. The abundance of spotted ratfish and t ...
... for understanding how species are distributed and for the proper implementation of successful management strategies. The spotted ratfish (Hydrolagus colliei), is a deep water species of the Chimaeridae family occurring along the west coast of the United States. The abundance of spotted ratfish and t ...
Tropical tadpole assemblages: which factors affect their structure
... richness may present different species composition (e.g. high ß-diversity) (Parris & MacCarthy 1999). Pond habitats are relatively well known and differ from streams mainly to their unpredictability. Characteristics as water temperature, depth, dissolved oxygen, conductivity and presence of vegetati ...
... richness may present different species composition (e.g. high ß-diversity) (Parris & MacCarthy 1999). Pond habitats are relatively well known and differ from streams mainly to their unpredictability. Characteristics as water temperature, depth, dissolved oxygen, conductivity and presence of vegetati ...
Roskilde University 1 - Roskilde University Digital Archive
... 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 condition and activity results would be improved were more accurate data on environmental variables (soil moistu ...
... 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 condition and activity results would be improved were more accurate data on environmental variables (soil moistu ...
By: David R.W. Bruinsma A Thesis
... lend or sell copies of the film, and to University Microfilms Inc. to publish an abstract of this thesis. This reproduction or copy of this thesis has been made available by authority of the copyright owner solely for the purpose of private study and research, and may only be reproduced and copied a ...
... lend or sell copies of the film, and to University Microfilms Inc. to publish an abstract of this thesis. This reproduction or copy of this thesis has been made available by authority of the copyright owner solely for the purpose of private study and research, and may only be reproduced and copied a ...
Habitat and dietary specificity in aphidophagous ladybirds
... aphids, Acyrthosiphon pisum and Aphis fabae, after selection for enhanced performance on that aphid as might occur when dietary specialization evolves. They were also found to perform better on their own prey than ladybirds from the other group. However, this result only demonstrates that performanc ...
... aphids, Acyrthosiphon pisum and Aphis fabae, after selection for enhanced performance on that aphid as might occur when dietary specialization evolves. They were also found to perform better on their own prey than ladybirds from the other group. However, this result only demonstrates that performanc ...
Reptile Habitat Management Handbook
... for example), or of rapidly moving long distances to avoid poor conditions. Reptiles are therefore particularly vulnerable to declining habitat quality and inappropriate habitat management. With some variation between species, reptiles prefer mid-successional habitats. They require both open areas, ...
... for example), or of rapidly moving long distances to avoid poor conditions. Reptiles are therefore particularly vulnerable to declining habitat quality and inappropriate habitat management. With some variation between species, reptiles prefer mid-successional habitats. They require both open areas, ...
COSEWIC assessment and status report on the Marbled Murrelet
... Threats and Limiting Factors Loss of nesting habitat in old-growth forests due to forest harvesting remains the greatest threat to the Marbled Murrelet. Fragmentation of the remaining forest is likely to result in increased exposure to nest predators, which prefer forest edges and changes to microc ...
... Threats and Limiting Factors Loss of nesting habitat in old-growth forests due to forest harvesting remains the greatest threat to the Marbled Murrelet. Fragmentation of the remaining forest is likely to result in increased exposure to nest predators, which prefer forest edges and changes to microc ...
Everglades Snail Kite - Wildlife Ecology and Conservation
... In conjunction with: Dr. Wiley Kitchens, U.S.G.S., Florida ...
... In conjunction with: Dr. Wiley Kitchens, U.S.G.S., Florida ...
Managing Natural Biodiversity in the Western Australian Wheatbelt
... Hughes et al. (1992) define natural as “existing in or caused by nature”. For us the key distinction is that natural things have not been brought into being through human (cultural) activity such as is the case with domestic livestock, agricultural crops, introduced weeds, feral animals, and exotic ...
... Hughes et al. (1992) define natural as “existing in or caused by nature”. For us the key distinction is that natural things have not been brought into being through human (cultural) activity such as is the case with domestic livestock, agricultural crops, introduced weeds, feral animals, and exotic ...
Recovery Plan Appendix B
... Principles for Gatton and Laidley Shires, South-East Queensland (Appendix A to the Biodiversity Recovery Plan for Gatton and Laidley Shires, South-East Queensland 20032008), which can be viewed or purchased at the Lockyer Catchment Centre. This document provides descriptions, habitat and threat info ...
... Principles for Gatton and Laidley Shires, South-East Queensland (Appendix A to the Biodiversity Recovery Plan for Gatton and Laidley Shires, South-East Queensland 20032008), which can be viewed or purchased at the Lockyer Catchment Centre. This document provides descriptions, habitat and threat info ...
Bobtail Skink (Bobtails)
... Life history and reproduction Bobtails are remarkable for being one of the few reptiles - let alone animals - that are monogamous. A male and female pair-up in early spring for a 6-8 week pairing period before mating in late spring. Following mating, the male and female go their separate ways, reun ...
... Life history and reproduction Bobtails are remarkable for being one of the few reptiles - let alone animals - that are monogamous. A male and female pair-up in early spring for a 6-8 week pairing period before mating in late spring. Following mating, the male and female go their separate ways, reun ...
Alberta Ords Kangaroo Rat Recovery Plan 2013 -2018
... construct in loose sandy soil. Individuals are active aboveground at night to search for food and mates. Kangaroo rats primarily eat plant seeds and stems that they collect in their external furlined cheek pouches and carry back to their burrows for eating and storage. Ord’s kangaroo rat is listed a ...
... construct in loose sandy soil. Individuals are active aboveground at night to search for food and mates. Kangaroo rats primarily eat plant seeds and stems that they collect in their external furlined cheek pouches and carry back to their burrows for eating and storage. Ord’s kangaroo rat is listed a ...
Pages 16-144 - South Atlantic Fishery Management Council
... density can be higher than the medium growth form and stem height averages about 0.2 - 0.3 meters or shorter. This growth pattern is attributed to a combination of periodicity of tidal inundation, soil salinity, soil saturation, nutrient availability and other less predictable factors. The zonation ...
... density can be higher than the medium growth form and stem height averages about 0.2 - 0.3 meters or shorter. This growth pattern is attributed to a combination of periodicity of tidal inundation, soil salinity, soil saturation, nutrient availability and other less predictable factors. The zonation ...
Effects of patch attributes, barriers, and distance between patches
... as patch size and distance between patches, into their metapopulation model for the Glanville fritillary butterfly (Melitaea cinxia). They found that this complex model did not perform much better than a basic model with only patch size and distance between patches. Likewise, for the forest carabid ...
... as patch size and distance between patches, into their metapopulation model for the Glanville fritillary butterfly (Melitaea cinxia). They found that this complex model did not perform much better than a basic model with only patch size and distance between patches. Likewise, for the forest carabid ...
Ecological monitoring in Cambridge Bay
... location of a sampled microhabitat: where the triangles denote the two dry ecosites and the squares denote the two wet habitats. Points which are located more closely together are more similar than points located further away from one another. In A, the text represents the individual species codes ( ...
... location of a sampled microhabitat: where the triangles denote the two dry ecosites and the squares denote the two wet habitats. Points which are located more closely together are more similar than points located further away from one another. In A, the text represents the individual species codes ( ...
Western harvest mouse (Reithrodontomys megalotis)
... Canada, this species is naturally rare and occurs at low densities, typically comprising less than 10% of the small mammal community. Population densities as high as 80 animals/ha have been recorded in BC. Western harvest mice populations appear to peak in late fall or early winter and decline to lo ...
... Canada, this species is naturally rare and occurs at low densities, typically comprising less than 10% of the small mammal community. Population densities as high as 80 animals/ha have been recorded in BC. Western harvest mice populations appear to peak in late fall or early winter and decline to lo ...
Bringing El TigrE HomE - Defenders of Wildlife
... the United States—and one in Jalisco. Jaguars are relatively numerous in these core areas and, as long as poaching and habitat loss can be controlled, relatively secure (FWS 2016a). So how can the United States re-establish a population of jaguars? ESA protections and critical habitat designation ca ...
... the United States—and one in Jalisco. Jaguars are relatively numerous in these core areas and, as long as poaching and habitat loss can be controlled, relatively secure (FWS 2016a). So how can the United States re-establish a population of jaguars? ESA protections and critical habitat designation ca ...
Managing Scrub for Nightingales
... evolves into woodland. Nightingales seem to be particularly sensitive to this gradual change and will only use scrub for the few years when it is most vigorous and dense. To maintain suitable scrub structure, regular maintenance is needed. The easiest way to achieve this is by rotational cutting of ...
... evolves into woodland. Nightingales seem to be particularly sensitive to this gradual change and will only use scrub for the few years when it is most vigorous and dense. To maintain suitable scrub structure, regular maintenance is needed. The easiest way to achieve this is by rotational cutting of ...
Vernal Pool Fairy Shrimp
... Vernal pool fairy shrimp are distributed from southern Oregon to southern California in a wide variety of habitat types (Eriksen and Belk 1999). Soil types associated with vernal pool fairy shrimp vary greatly with geography and influence the ecology of the species. This species is usually associate ...
... Vernal pool fairy shrimp are distributed from southern Oregon to southern California in a wide variety of habitat types (Eriksen and Belk 1999). Soil types associated with vernal pool fairy shrimp vary greatly with geography and influence the ecology of the species. This species is usually associate ...
SOUTHERN BROWN BANDICOOT – ISOODON OBESULUS
... but if foxes and other introduced predators are not controlled, our habitat creation efforts are rather pointless. The fact that areas of ideal habitat exists but without their former bandicoot inhabitants indicates that predation is likely to be the most significant threat. ...
... but if foxes and other introduced predators are not controlled, our habitat creation efforts are rather pointless. The fact that areas of ideal habitat exists but without their former bandicoot inhabitants indicates that predation is likely to be the most significant threat. ...
The Role of Bankside Habitat in River Ecology
... and various aspects of river corridor management.andriver habitat surveys. However none of these studies have addressed, in a holistic sense, the marginal zone of-rivers. The interactions.. between plants,,their effects on flow hydraulics and the associated fauna ofinvertebrates, fish; birds and mam ...
... and various aspects of river corridor management.andriver habitat surveys. However none of these studies have addressed, in a holistic sense, the marginal zone of-rivers. The interactions.. between plants,,their effects on flow hydraulics and the associated fauna ofinvertebrates, fish; birds and mam ...
Aurochs and Bison – natural range and habitat selection, de
... - lost from Sweden in C11th, Germany in C14th, Hungary in C16th, Romania, Moldova, E Russia in C18th - protected in Poland from C12th as royal game - unsuccessful attempt to release European bison bred in captivity at Mecklenberg in 1689 - bison brought to Saxony from Prussia and Poland survived in ...
... - lost from Sweden in C11th, Germany in C14th, Hungary in C16th, Romania, Moldova, E Russia in C18th - protected in Poland from C12th as royal game - unsuccessful attempt to release European bison bred in captivity at Mecklenberg in 1689 - bison brought to Saxony from Prussia and Poland survived in ...
Northern hairy-nosed wombat factsheet
... hairy-nosed wombats Visit www.ehp.qld.gov.au or phone 13 QGOV (13 74 68). are left? It is thought that the NHN wombat might have already been in decline when Europeans settled, and was probably the least common of the three wombat species at that time. In the 1980’s NHN wombat numbers had fallen as ...
... hairy-nosed wombats Visit www.ehp.qld.gov.au or phone 13 QGOV (13 74 68). are left? It is thought that the NHN wombat might have already been in decline when Europeans settled, and was probably the least common of the three wombat species at that time. In the 1980’s NHN wombat numbers had fallen as ...
Habitat destruction
Habitat destruction is the process in which natural habitat is rendered functionally unable to support the species present. In this process, the organisms that previously used the site are displaced or destroyed, reducing biodiversity. Habitat destruction by human activity is mainly for the purpose of harvesting natural resources for industry production and urbanization. Clearing habitats for agriculture is the principal cause of habitat destruction. Other important causes of habitat destruction include mining, logging, trawling and urban sprawl. Habitat destruction is currently ranked as the primary cause of species extinction worldwide. It is a process of natural environmental change that may be caused by habitat fragmentation, geological processes, climate change or by human activities such as the introduction of invasive species, ecosystem nutrient depletion, and other human activities mentioned below.The terms habitat loss and habitat reduction are also used in a wider sense, including loss of habitat from other factors, such as water and noise pollution.