A snake in paradise: Disturbance of plant reproduction following
... posts in 1-hour trials, up to 4 h per day. Observation trials were preceded by a 5–10 min pre-observation period, in which visits were not registered. Only animals visiting the flowers were recorded, and their flower probing behaviour observed. ...
... posts in 1-hour trials, up to 4 h per day. Observation trials were preceded by a 5–10 min pre-observation period, in which visits were not registered. Only animals visiting the flowers were recorded, and their flower probing behaviour observed. ...
The acid taste of climate change: 20th century acidification is
... abiotic environments in terms of discharge, temperature and water chemistry to which species are evolutionary adapted to (Odum 1971, van der Kamp 1995, Cantonati et al. 2006, Gerecke et al. 2011). As springs occur in a high spatial frequency in the mountainous regions of Central Europe they provide ...
... abiotic environments in terms of discharge, temperature and water chemistry to which species are evolutionary adapted to (Odum 1971, van der Kamp 1995, Cantonati et al. 2006, Gerecke et al. 2011). As springs occur in a high spatial frequency in the mountainous regions of Central Europe they provide ...
34. Chanas, B., Pawlik, J.R. 1995.
... of Caribbean reef sponges. Sponge species with high concentrations of spicules in their tissues, and with variable spicule morphologies, were chosen for the experiments. The presence of spicules did not alter food palatability relative to controls for any of the sponges tested. Analyses of ash conte ...
... of Caribbean reef sponges. Sponge species with high concentrations of spicules in their tissues, and with variable spicule morphologies, were chosen for the experiments. The presence of spicules did not alter food palatability relative to controls for any of the sponges tested. Analyses of ash conte ...
Center comments on Guam military buildup
... Marine Fisheries Service (“NMFS”) so relevant information on impacts to species was not fully available in the DEIS. The DEIS also does not fully address several concerns raised by the Government Accountability Office (“GAO”). The GAO points out that Guam’s infrastructure is not likely able to meet ...
... Marine Fisheries Service (“NMFS”) so relevant information on impacts to species was not fully available in the DEIS. The DEIS also does not fully address several concerns raised by the Government Accountability Office (“GAO”). The GAO points out that Guam’s infrastructure is not likely able to meet ...
Interspecific Competition and Species Co
... totals.However,justas incontingency inferences canbe made. tathenumberof the analysisto only "potentialcom- ble analysis,forcertainfixedmargins Restricting can be so smallthatstatistical petitors" is equallyproblematic, sinceone mustdeter- possiblerearrangements minea prioriwhichof thetotalpossibles ...
... totals.However,justas incontingency inferences canbe made. tathenumberof the analysisto only "potentialcom- ble analysis,forcertainfixedmargins Restricting can be so smallthatstatistical petitors" is equallyproblematic, sinceone mustdeter- possiblerearrangements minea prioriwhichof thetotalpossibles ...
European Mixed Forests: definition and research perspectives
... Main results: A mixed forest is defined as a forest unit, excluding linear formations, where at least two tree species coexist at any developmental stage, sharing common resources (light, water, and/or soil nutrients). The presence of each of the component species is normally quantified as a proport ...
... Main results: A mixed forest is defined as a forest unit, excluding linear formations, where at least two tree species coexist at any developmental stage, sharing common resources (light, water, and/or soil nutrients). The presence of each of the component species is normally quantified as a proport ...
- Bergen.org
... 3. Three species of birds forage for insects in the same tree. However, each species tends to forage in different parts of the tree. This pattern of foraging is best explained as an adaptation to which of the following relationships? A. predation B. mutualism C. competition D. commensalism ...
... 3. Three species of birds forage for insects in the same tree. However, each species tends to forage in different parts of the tree. This pattern of foraging is best explained as an adaptation to which of the following relationships? A. predation B. mutualism C. competition D. commensalism ...
Small-mammal herbivore control of secondary succession in New
... australis stems, which extended several meters above the top lip of the cage. Although the smaller mesh size may have excluded a smaller class of ground-dwelling insects, cages were again open on top and allowed access by flying insects and birds. Cage controls had two 0.3 3 0.1 m (width 3 height) en ...
... australis stems, which extended several meters above the top lip of the cage. Although the smaller mesh size may have excluded a smaller class of ground-dwelling insects, cages were again open on top and allowed access by flying insects and birds. Cage controls had two 0.3 3 0.1 m (width 3 height) en ...
Predictors of species sensitivity to fragmentation
... directly. This is due to the fact that in the case of fragmentation driven by land use change and associated habitat clearing, we generally lack any information on population size prior to fragmentation. Likewise, fragmentation experiments usually have not collated information on population size bef ...
... directly. This is due to the fact that in the case of fragmentation driven by land use change and associated habitat clearing, we generally lack any information on population size prior to fragmentation. Likewise, fragmentation experiments usually have not collated information on population size bef ...
Conservatism of responses to environmental change is rare under
... Most experiments were 2–3 years long, but some experiments ran for longer than 3 years and only percent cover estimates were collected in the interim as destructive harvesting was unfeasible. To minimize the variation in experimental duration, we chose to limit experimental duration to 3 years. Acro ...
... Most experiments were 2–3 years long, but some experiments ran for longer than 3 years and only percent cover estimates were collected in the interim as destructive harvesting was unfeasible. To minimize the variation in experimental duration, we chose to limit experimental duration to 3 years. Acro ...
mammals, edge effects, and the loss of tropical forest diversity
... Abstract. Relative to the surrounding mainland forests, a subset of tree species dominates wind-exposed, forested islands in Gatún Lake, Panama. We explored how tree diversity in these fragments has been affected by (1) impoverishment of the mammal community and (2) changes in abiotic conditions fo ...
... Abstract. Relative to the surrounding mainland forests, a subset of tree species dominates wind-exposed, forested islands in Gatún Lake, Panama. We explored how tree diversity in these fragments has been affected by (1) impoverishment of the mammal community and (2) changes in abiotic conditions fo ...
Reiskind, M.H. and M.L. Wilson. 2008. Interspecific
... ABSTRACT Many invasive species succeed in becoming established in new locations because of their competitive superiority to native species. This has been shown in several examples involving mosquitoes. In this study, we examined the interspeciÞc competition between mosquito larvae of a well-establis ...
... ABSTRACT Many invasive species succeed in becoming established in new locations because of their competitive superiority to native species. This has been shown in several examples involving mosquitoes. In this study, we examined the interspeciÞc competition between mosquito larvae of a well-establis ...
Spruce-fir forest - Spruce-fir forests occur on high mountaintops in
... Spruce‐fir forests occur on high mountaintops in western North Carolina, generally above 4,500 feet in elevation. These forests are considered Pleistocene relicts that have become isolated from boreal forests of the northern United States and Canada. Many of the species of plants and animals fo ...
... Spruce‐fir forests occur on high mountaintops in western North Carolina, generally above 4,500 feet in elevation. These forests are considered Pleistocene relicts that have become isolated from boreal forests of the northern United States and Canada. Many of the species of plants and animals fo ...
Patterns in Species Richness
... Why the number of species varies from place to place, and from time to time, are questions that present themselves not only to ecologists but to anybody who observes and ponders the natural world. They are interesting questions in their own right—but they are also questions of practical importance. ...
... Why the number of species varies from place to place, and from time to time, are questions that present themselves not only to ecologists but to anybody who observes and ponders the natural world. They are interesting questions in their own right—but they are also questions of practical importance. ...
2001cjb
... plants is correlated with large seed crops, animal dispersal, and small seed size, which is also believed to be correlated with dispersability (Rejmánek 1995, 1996; Rejmánek and Richardson 1996). Similarly, many invaders produce significant seed banks (Holm et al. 1977). Crawley et al. (1996) found ...
... plants is correlated with large seed crops, animal dispersal, and small seed size, which is also believed to be correlated with dispersability (Rejmánek 1995, 1996; Rejmánek and Richardson 1996). Similarly, many invaders produce significant seed banks (Holm et al. 1977). Crawley et al. (1996) found ...
Pages 304-308 - Lakeland Regional High School
... dramatic and well known • The damage to wildlife and ecosystems caused by pollution can be severe - But it tends to be less than the damage caused by habitat alteration or invasive species Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... dramatic and well known • The damage to wildlife and ecosystems caused by pollution can be severe - But it tends to be less than the damage caused by habitat alteration or invasive species Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Dendrogyra cylindrus (Pillar Coral)
... HABITAT AND ACTIVITY. They are marine species, typically found on a flat or slightly inclined reef (back-reef or fore-reef) environment. They can survive an upper depth limit of 1m and a lower depth limit of 25m, but are commonly found at depths of 5-15m (IUCN, 2016). They are not found in extremely ...
... HABITAT AND ACTIVITY. They are marine species, typically found on a flat or slightly inclined reef (back-reef or fore-reef) environment. They can survive an upper depth limit of 1m and a lower depth limit of 25m, but are commonly found at depths of 5-15m (IUCN, 2016). They are not found in extremely ...
Where The Wild Extinctions Are
... only 14 years after the last Atitlan Grebe died. And the CREO lists the most recent mammal extinction as occurring in 1991, only a nine-year lag. If Wilson's criteria were used, there could be no extinctions in the IUCN Red List 2000 where the species was last recorded later than 1950. But in fact, ...
... only 14 years after the last Atitlan Grebe died. And the CREO lists the most recent mammal extinction as occurring in 1991, only a nine-year lag. If Wilson's criteria were used, there could be no extinctions in the IUCN Red List 2000 where the species was last recorded later than 1950. But in fact, ...
Greater bilby - WWF
... The greater bilby is only partly adapted to arid environments and thus could be at risk of local extinctions ...
... The greater bilby is only partly adapted to arid environments and thus could be at risk of local extinctions ...
Planted Forests and Biodiversity
... Impact of Using Genetically Improved FRM. FRM collected from registered seed stands results in plantation forests with a level of genetic diversity most often similar to the wild population from which it originates. The main genetic impacts depend on the level of adaptation of the introduced populat ...
... Impact of Using Genetically Improved FRM. FRM collected from registered seed stands results in plantation forests with a level of genetic diversity most often similar to the wild population from which it originates. The main genetic impacts depend on the level of adaptation of the introduced populat ...
CO , nitrogen, and diversity differentially affect seed production of prairie plants 2
... seed production. Unfortunately, plant reproductive responses to global change are rarely studied in field settings, making it difficult to assess this possibility. To address this issue, we quantified the effects of elevated CO2, nitrogen deposition, and declining diversity on inflorescence producti ...
... seed production. Unfortunately, plant reproductive responses to global change are rarely studied in field settings, making it difficult to assess this possibility. To address this issue, we quantified the effects of elevated CO2, nitrogen deposition, and declining diversity on inflorescence producti ...
PDF
... other confined vessels. They may be fed intensively, such as by pellets, or extensively, in which case they rely on naturally present food. On reaching the marketable size, the crop is harvested. Alternatively, the juveniles may be used for restocking natural waterways depleted by overfishing, pollu ...
... other confined vessels. They may be fed intensively, such as by pellets, or extensively, in which case they rely on naturally present food. On reaching the marketable size, the crop is harvested. Alternatively, the juveniles may be used for restocking natural waterways depleted by overfishing, pollu ...
Speciation - KSU Web Home
... • Species: a population or group of populations whose members share characteristics and can freely breed with one another and produce fertile offspring ~ 1.8 million species reported (can be higher). • Population: a group of individuals of a species that live in the same area • Is mule or liger spec ...
... • Species: a population or group of populations whose members share characteristics and can freely breed with one another and produce fertile offspring ~ 1.8 million species reported (can be higher). • Population: a group of individuals of a species that live in the same area • Is mule or liger spec ...
A seven-year study of individual variation in fruit
... fruit crops. Over a 7-year period (1979-1985),overall fruit production was high during three nonconsecutive years and low during four years. Within genera, tree species displayed distinct fruiting schedules. Even within populations, individual trees ~ometimesfruited in different years or failed to f ...
... fruit crops. Over a 7-year period (1979-1985),overall fruit production was high during three nonconsecutive years and low during four years. Within genera, tree species displayed distinct fruiting schedules. Even within populations, individual trees ~ometimesfruited in different years or failed to f ...
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.