What about nonadaptive radiation
... The genus Albinaria (Pulmonata: Clausiliidae) contains over 75 species and many more subspecies (Nordsieck, 1979; personal observations). Only rarely do more than two Albinaria species live in the same place and often only a single species is found at a site. There is a bewildering variation in shel ...
... The genus Albinaria (Pulmonata: Clausiliidae) contains over 75 species and many more subspecies (Nordsieck, 1979; personal observations). Only rarely do more than two Albinaria species live in the same place and often only a single species is found at a site. There is a bewildering variation in shel ...
Concepts of keystone species and species importance in ecology
... two typical characteristics of keystone species. First, their presence is crucial in maintaining organization and diversity of their communities and ecosystems. Second, it is implicit that these species are exceptional, relative to the rest of community in their importance. The best way to identify ...
... two typical characteristics of keystone species. First, their presence is crucial in maintaining organization and diversity of their communities and ecosystems. Second, it is implicit that these species are exceptional, relative to the rest of community in their importance. The best way to identify ...
Speciation Lectures. Part 1 Handout 4. 2016
... "It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, ...
... "It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, ...
speciation - Evolution and Ecology | UC Davis
... "It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, ...
... "It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, ...
Lecture 15
... Mainland shows species/ area relationship, but weaker than islands Suggests that processes specific to islands are important colonization extinction Mainland dispersal is so high that area doesn’t affect colonization much ...
... Mainland shows species/ area relationship, but weaker than islands Suggests that processes specific to islands are important colonization extinction Mainland dispersal is so high that area doesn’t affect colonization much ...
SIP - for CD - Texas Oak Wilt | texasoakwilt.org
... hardwood regeneration. During prolonged droughts, the oil-laden cedars become heavy fuel loads creating a fire hazard. Crown fires throw off sparks that can ignite new areas, making control difficult. Local water resources can be impacted by dense cedar. Since Ashe juniper is evergreen and has a muc ...
... hardwood regeneration. During prolonged droughts, the oil-laden cedars become heavy fuel loads creating a fire hazard. Crown fires throw off sparks that can ignite new areas, making control difficult. Local water resources can be impacted by dense cedar. Since Ashe juniper is evergreen and has a muc ...
55_DetailLectOut_jkAR
... teams have used protein, mitochondrial DNA, and nuclear microsatellite DNA to assess the genetic variability in the Yellowstone grizzly population. These analyses show that the Yellowstone population has lower levels of genetic variability than other grizzly bear populations in North America. Ho ...
... teams have used protein, mitochondrial DNA, and nuclear microsatellite DNA to assess the genetic variability in the Yellowstone grizzly population. These analyses show that the Yellowstone population has lower levels of genetic variability than other grizzly bear populations in North America. Ho ...
Restoration
... Question: Which life history stage of Great St. John’s Wort is likely to have the highest survivorship during a recovery project? Hypothesis: Transplants of adult plants are more likely to survive than juvenile plants or seedlings arising from stratified seeds. Null Hypothesis: Survivorship of all ...
... Question: Which life history stage of Great St. John’s Wort is likely to have the highest survivorship during a recovery project? Hypothesis: Transplants of adult plants are more likely to survive than juvenile plants or seedlings arising from stratified seeds. Null Hypothesis: Survivorship of all ...
Habitats
... particular role in a habitat E.g. bees fill a reproductive niche for flowers Wolves fill a predatory niche that improves the genetic quality of a herd of elk A habitat has a limited amount of niches to fill. Because of this, competition, predation, cooperation, and symbiosis occur. ...
... particular role in a habitat E.g. bees fill a reproductive niche for flowers Wolves fill a predatory niche that improves the genetic quality of a herd of elk A habitat has a limited amount of niches to fill. Because of this, competition, predation, cooperation, and symbiosis occur. ...
TheEverglades2015
... • Can with stand flooding and high salinity • Produce dense stands that form thick carpets of needles and inhibit the growth of native species • Seeds remain fertile up to a year, with a single tree producing thousands of seeds • Taking over places in the last remaining nesting areas for the America ...
... • Can with stand flooding and high salinity • Produce dense stands that form thick carpets of needles and inhibit the growth of native species • Seeds remain fertile up to a year, with a single tree producing thousands of seeds • Taking over places in the last remaining nesting areas for the America ...
Infaunal Trophic Index (ITI)
... published list (WRc, 1992) and determination of abundance in each trophic group so that formula above can be applied. The purpose of the Infaunal Trophic Index (ITI) is to describe the feeding behaviour of soft bottom benthic communities in terms of a single understandable parameter. These animals f ...
... published list (WRc, 1992) and determination of abundance in each trophic group so that formula above can be applied. The purpose of the Infaunal Trophic Index (ITI) is to describe the feeding behaviour of soft bottom benthic communities in terms of a single understandable parameter. These animals f ...
this paper as a pdf
... • Forests are home to a diversity of birds as well as nationally important populations of some rare or declining species, e.g. Hen Harrier, Nightjar and Merlin and may provide opportunities for other species to colonise Ireland. For example, Ireland does not have a resident population of woodpeckers ...
... • Forests are home to a diversity of birds as well as nationally important populations of some rare or declining species, e.g. Hen Harrier, Nightjar and Merlin and may provide opportunities for other species to colonise Ireland. For example, Ireland does not have a resident population of woodpeckers ...
the iucn red list of seahorses and pipefishes
... incidentally as bycatch and they are often subsequently sold live to aquaria, or dried and traded globally for use in traditional medicines, a lucrative market that involves millions of seahorses and complex international trade routes. Levels of offtake from wild populations are not known, and there ...
... incidentally as bycatch and they are often subsequently sold live to aquaria, or dried and traded globally for use in traditional medicines, a lucrative market that involves millions of seahorses and complex international trade routes. Levels of offtake from wild populations are not known, and there ...
The Great Feral Cat Con Job
... What studies we do have suggest that cats and foxes play a critical role in regulating rabbit populations (Pech et al 1992, Newsome et al 1989), and that rabbits now provide 90 per cent of the diet of some native raptors (Australian Museum Online, accessed June 2006). What we don’t have is any stud ...
... What studies we do have suggest that cats and foxes play a critical role in regulating rabbit populations (Pech et al 1992, Newsome et al 1989), and that rabbits now provide 90 per cent of the diet of some native raptors (Australian Museum Online, accessed June 2006). What we don’t have is any stud ...
Biomes and Biodiversity Notes
... species – a group of organisms that are closely related and can mate to produce fertile offspring. population – a group of organisms of the same species that live in an area. community - made up from all of the organisms in an ecosystem. ecosystem - a community of organisms and their abiotic, or non ...
... species – a group of organisms that are closely related and can mate to produce fertile offspring. population – a group of organisms of the same species that live in an area. community - made up from all of the organisms in an ecosystem. ecosystem - a community of organisms and their abiotic, or non ...
Phenotypic diversity and ecosystem functioning in changing
... environmental factor, E, which can be either abiotic or biotic—for example, temperature, resource concentration, or predator abundance. Certain morphological or physiological traits of the species, such as structures facilitating uptake at low resource densities or antipredatory defenses, can influe ...
... environmental factor, E, which can be either abiotic or biotic—for example, temperature, resource concentration, or predator abundance. Certain morphological or physiological traits of the species, such as structures facilitating uptake at low resource densities or antipredatory defenses, can influe ...
A utilitarian-based approach to conservation
... the ESA appears to place the burden of proof on the economic side rather than on the conservation side. In other words, the ESA presumes that conservation actions will be taken unless it can be shown that their costs exceed their benefits. While this may not be completely satisfactory from an econom ...
... the ESA appears to place the burden of proof on the economic side rather than on the conservation side. In other words, the ESA presumes that conservation actions will be taken unless it can be shown that their costs exceed their benefits. While this may not be completely satisfactory from an econom ...
Common Name (Scientific name)
... Life History & Threats: Generally one generation per year. Fairy shrimp eggs dry out during the summer and hatch after being soaked by winter rains. The larval stage lasts an average of 33 days, and adults reproduce after an average of 43 days (Cordeiro 2008). This species is faced with threats of h ...
... Life History & Threats: Generally one generation per year. Fairy shrimp eggs dry out during the summer and hatch after being soaked by winter rains. The larval stage lasts an average of 33 days, and adults reproduce after an average of 43 days (Cordeiro 2008). This species is faced with threats of h ...
Camarhynchus heliobates, Mangrove Finch
... The habitat of this species is protected within the Galápagos National Park and, in 1979, the islands were declared a World Heritage Site, although this was classified as threatened in 2007. An action plan was published 2010 (in English and Spanish) following a workshop in 2008. Predator control is ...
... The habitat of this species is protected within the Galápagos National Park and, in 1979, the islands were declared a World Heritage Site, although this was classified as threatened in 2007. An action plan was published 2010 (in English and Spanish) following a workshop in 2008. Predator control is ...
Managing Biodiversity - SLC Geog A Level Blog
... plants, animals or fish is part of the subsistence lifestyle of indigenous people and is usually sustainable. • Over harvesting or overexploitation are usually the result of commercial rather than subsistence activity. When activities such as shooting elephants for ivory or harvesting shellfish and ...
... plants, animals or fish is part of the subsistence lifestyle of indigenous people and is usually sustainable. • Over harvesting or overexploitation are usually the result of commercial rather than subsistence activity. When activities such as shooting elephants for ivory or harvesting shellfish and ...
4.0 Additional guidance with applying Source Code R
... CITES defines the term “ranching” as the rearing in a controlled environment of animals taken as eggs or juveniles from the wild, where they would otherwise have had a very low probability of surviving to adulthood. Although already amended to be more specific (Resolution. Conf. 11.16 [Rev. Cop15]), ...
... CITES defines the term “ranching” as the rearing in a controlled environment of animals taken as eggs or juveniles from the wild, where they would otherwise have had a very low probability of surviving to adulthood. Although already amended to be more specific (Resolution. Conf. 11.16 [Rev. Cop15]), ...
Lesson 3 - Scientist in Residence
... biodiversity as the "totality of genes, species, and ecosystems of a region". However, the most common interpretation of biodiversity is species diversity. Species diversity is a measure of the variety of species which live in an area, and the most basic measurement is “species richness” or the numb ...
... biodiversity as the "totality of genes, species, and ecosystems of a region". However, the most common interpretation of biodiversity is species diversity. Species diversity is a measure of the variety of species which live in an area, and the most basic measurement is “species richness” or the numb ...
pages 36 to 42
... Stream (approx. 37° 59' S). Kauri does extend a little further south on the western side of North Island (38° 07' S) (Ecroyd 1982). On the Papamoa Hills a few rickers mark its eastern limit (approx. 176° 13' E). b) Leionema nudum (mairehau) reaches its known southern limit on the eastern side of th ...
... Stream (approx. 37° 59' S). Kauri does extend a little further south on the western side of North Island (38° 07' S) (Ecroyd 1982). On the Papamoa Hills a few rickers mark its eastern limit (approx. 176° 13' E). b) Leionema nudum (mairehau) reaches its known southern limit on the eastern side of th ...
Document
... Summarize the locations where a species has been successful Do not tell us about locations where they could be successful Do not tell us about places where a species has failed Understanding distributions relies on knowing what factors prevent species from occupying a particular location or region ...
... Summarize the locations where a species has been successful Do not tell us about locations where they could be successful Do not tell us about places where a species has failed Understanding distributions relies on knowing what factors prevent species from occupying a particular location or region ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.