rain forests: floristics
... provides a critically important resource which supports livelihood and wellbeing of tens of millions of people both in Africa and beyond. This forest type is still well-preserved, accounting for less than 6% of the total loss of humid forest cover in the world. However, deforestation is a severe pro ...
... provides a critically important resource which supports livelihood and wellbeing of tens of millions of people both in Africa and beyond. This forest type is still well-preserved, accounting for less than 6% of the total loss of humid forest cover in the world. However, deforestation is a severe pro ...
Name of indicator 3.10 Zooplankton mean size vs. total stock (MSTS)
... are considered separately. Abundant zooplankton with a high mean size would indicate good feeding conditions for zooplanktivorous fish as well as high potential grazing on phytoplankton; while other combinations (small total stock, or small mean size, or both) would indicate limitations in the abili ...
... are considered separately. Abundant zooplankton with a high mean size would indicate good feeding conditions for zooplanktivorous fish as well as high potential grazing on phytoplankton; while other combinations (small total stock, or small mean size, or both) would indicate limitations in the abili ...
Extinction: bad genes or bad luck?
... Extinction of large groups of organisms by sampling accident of the sort just described may be called Galton extinction because of Francis Galton's classic use of birthdeath models to explain extinction rates in human surnames (Galton and Watson, 1875) For Galton extinction to be viable on a broad s ...
... Extinction of large groups of organisms by sampling accident of the sort just described may be called Galton extinction because of Francis Galton's classic use of birthdeath models to explain extinction rates in human surnames (Galton and Watson, 1875) For Galton extinction to be viable on a broad s ...
An experimental demonstration of direct behavioural
... replacing the autochthonous species P. melisellensis by competitive exclusion. We used an experimental approach on newborn lizards to test the hypothesis that direct behavioural interference occurs between P. sicula and P. melisellensis, whereby the former obtains an advantage over the latter. Brief ...
... replacing the autochthonous species P. melisellensis by competitive exclusion. We used an experimental approach on newborn lizards to test the hypothesis that direct behavioural interference occurs between P. sicula and P. melisellensis, whereby the former obtains an advantage over the latter. Brief ...
INTERMEDIATE DISTURBANCE AND ITS RELATIONSHIP TO
... rigidly defined spatial and temporal criteria, but more as a general conceptual framework, based on a series of assumptions, from which system-specific questions can and should be asked. Specifically, for the intermediate disturbance hypothesis to work, the following assumptions must be met: (1) spe ...
... rigidly defined spatial and temporal criteria, but more as a general conceptual framework, based on a series of assumptions, from which system-specific questions can and should be asked. Specifically, for the intermediate disturbance hypothesis to work, the following assumptions must be met: (1) spe ...
Mass Extinctions Increase Evenness of Genus Diversity Across
... The Simpson index looks at an aspect of evenness by measuring the probability that two genera randomly selected at a point in time belong to different modes. While it follows the same trend as the Shannon index, the peaks and valleys in evenness are more pronounced. During mass extinctions, there is ...
... The Simpson index looks at an aspect of evenness by measuring the probability that two genera randomly selected at a point in time belong to different modes. While it follows the same trend as the Shannon index, the peaks and valleys in evenness are more pronounced. During mass extinctions, there is ...
a transcontinental risk assessment of barriers to animal
... Coastal) run roughly north–south, so that the border crosses the mountain ranges at approximately a 70 angle. These mountain chains exhibit high spatial heterogeneity in precipitation (National Atlas, 2008) and bound major ecosystems, some of which occur in narrow bands [Commission for Environmenta ...
... Coastal) run roughly north–south, so that the border crosses the mountain ranges at approximately a 70 angle. These mountain chains exhibit high spatial heterogeneity in precipitation (National Atlas, 2008) and bound major ecosystems, some of which occur in narrow bands [Commission for Environmenta ...
Sympatric speciation is reinforced by predation, parasite load
... highlight the importance of frequency-dependent selection and predators in the evolution of premating isolating mechanisms. The three species, a detritivore, an ostracod-eater, and a scale-eater which preys upon the other two, inhabit distinct trophic niches. We use geometric morphometrics to exami ...
... highlight the importance of frequency-dependent selection and predators in the evolution of premating isolating mechanisms. The three species, a detritivore, an ostracod-eater, and a scale-eater which preys upon the other two, inhabit distinct trophic niches. We use geometric morphometrics to exami ...
global strategy on invasive alien species
... humans are also in some cases having negative impacts on ecosystems and the species of which they are composed, as well as on local economies. One major challenge is to identify when these alien or non-indigenous species are bringing about changes that are inimical to ecosystems, biodiversity, healt ...
... humans are also in some cases having negative impacts on ecosystems and the species of which they are composed, as well as on local economies. One major challenge is to identify when these alien or non-indigenous species are bringing about changes that are inimical to ecosystems, biodiversity, healt ...
FACILITATIVE INTERACTIONS AMONG PLANTS VIA SHARED
... density. Population size was divided into small (550– 2200 individuals), medium (3100–7500), and large populations (12 000–33 000). The distribution of densities was bimodal and was divided into two groups: low (0.6–2.9 plants/m2) or high (3.3–6.5 plants/m2) density. I examined pollinator availabili ...
... density. Population size was divided into small (550– 2200 individuals), medium (3100–7500), and large populations (12 000–33 000). The distribution of densities was bimodal and was divided into two groups: low (0.6–2.9 plants/m2) or high (3.3–6.5 plants/m2) density. I examined pollinator availabili ...
Stochastic species distributions are driven by organism size
... show large variability across organism groups. We tested two ideas related to the degree of ecological determinism vs. stochasticity using a large data set comprising bacterio-, phyto-, and zooplankton. We expected that (1) there are predictable, size-driven differences in the degree to which plankt ...
... show large variability across organism groups. We tested two ideas related to the degree of ecological determinism vs. stochasticity using a large data set comprising bacterio-, phyto-, and zooplankton. We expected that (1) there are predictable, size-driven differences in the degree to which plankt ...
ExamView Pro - Chapter 20.bnk
... b. Predict the relative numbers of herbs, shrubs, and trees and the total number of plant species that you would expect to see 100 years after abandonment of the field. ANS: a. The following are some valid conclusions: (1) The total number of plant species present in the field increased over the 40- ...
... b. Predict the relative numbers of herbs, shrubs, and trees and the total number of plant species that you would expect to see 100 years after abandonment of the field. ANS: a. The following are some valid conclusions: (1) The total number of plant species present in the field increased over the 40- ...
Monsoon Vine Thickets Monsoon Vine Thickets
... with the upper storey characterized by one or two dominant trees. These trees often include mangarr Pouteria sericea, blackberry or marool Terminalia petiolaris, mamajen Mimusops elengii, ebony Diospyros ferrea var humilis and goonj, Celtis phillipensis. Trees are often covered in vines including sn ...
... with the upper storey characterized by one or two dominant trees. These trees often include mangarr Pouteria sericea, blackberry or marool Terminalia petiolaris, mamajen Mimusops elengii, ebony Diospyros ferrea var humilis and goonj, Celtis phillipensis. Trees are often covered in vines including sn ...
The influence of humidity and water availability on the survival of
... much lower than in the coastal areas, which is the habitat of another phytoseiid, Amblyseius limonicus (Garman & McGregor). Compared to the latter species, the eggs of A. hibisci are more resistant to low humidity and, as can be seen in Table 1, they appear to be the most resistant of all phytoseiid ...
... much lower than in the coastal areas, which is the habitat of another phytoseiid, Amblyseius limonicus (Garman & McGregor). Compared to the latter species, the eggs of A. hibisci are more resistant to low humidity and, as can be seen in Table 1, they appear to be the most resistant of all phytoseiid ...
Experimental evidence for fundamental, and not realized, niche
... plants sampled every month. Sampling was standardized, by beating individual plants 10 times into a fine-meshed beat net. Adult Cephalelus were then preserved in alcohol for identification in the laboratory. Following the approach outlined in Augustyn et al. (2013), we identified male insects by dis ...
... plants sampled every month. Sampling was standardized, by beating individual plants 10 times into a fine-meshed beat net. Adult Cephalelus were then preserved in alcohol for identification in the laboratory. Following the approach outlined in Augustyn et al. (2013), we identified male insects by dis ...
MosquitoLife Cycles, Ecology and
... (e.g. Culex, Coquillettidia, Mansonia species). (See Fig.1) Culex mosquitoes lay their eggs on the surface of suitable standing water in rafts consisting of between 50 and 500 eggs. These eggs are not dessication resistant and do not lie dormant, instead they hatch within a few days. Consequently Cu ...
... (e.g. Culex, Coquillettidia, Mansonia species). (See Fig.1) Culex mosquitoes lay their eggs on the surface of suitable standing water in rafts consisting of between 50 and 500 eggs. These eggs are not dessication resistant and do not lie dormant, instead they hatch within a few days. Consequently Cu ...
Türk
... Key Words: Megaselia scalaris, Megaselia brevissima, Phoridae, Diptera, first records Turkey. Anahtar sözcükler: Megaselia scalaris, Megaselia brevissima, Phoridae, Diptera, yeni kayıtlar, Türkiye ...
... Key Words: Megaselia scalaris, Megaselia brevissima, Phoridae, Diptera, first records Turkey. Anahtar sözcükler: Megaselia scalaris, Megaselia brevissima, Phoridae, Diptera, yeni kayıtlar, Türkiye ...
Occupancy Modeling
... Occupancy Estimation: since salamanders were detected at least once, we assume the site was occupied across all five sampling occasions, but not detected on sampling occasions 1, 3, 5 we denote ψ as occupancy probability and p as detection probability we can designate the likelihood for the salamand ...
... Occupancy Estimation: since salamanders were detected at least once, we assume the site was occupied across all five sampling occasions, but not detected on sampling occasions 1, 3, 5 we denote ψ as occupancy probability and p as detection probability we can designate the likelihood for the salamand ...
Utah Envirothon Study Guide
... available. In addition, some plants have more nutritional value than others and this may vary according to the time of year. For this reason, both the quantity and the quality of the food are important. Food requirements for an animal depend on that animal’s location, age, size, sex, behavior and se ...
... available. In addition, some plants have more nutritional value than others and this may vary according to the time of year. For this reason, both the quantity and the quality of the food are important. Food requirements for an animal depend on that animal’s location, age, size, sex, behavior and se ...
amphibian and reptile survey report and management plan for
... the National Wetland Inventory maps for Buckley AFB identify s23 wetland areas on the Base. Most of these wetlands consist of seasonal ponds on East Toll Gate Creek. There is also an unnamed drainage that flows north from Williams Lake, exiting the Base at East 6th Avenue. This drainage was dry duri ...
... the National Wetland Inventory maps for Buckley AFB identify s23 wetland areas on the Base. Most of these wetlands consist of seasonal ponds on East Toll Gate Creek. There is also an unnamed drainage that flows north from Williams Lake, exiting the Base at East 6th Avenue. This drainage was dry duri ...
05_3eTIF
... B) both groups will probably become native species C) the groups will probably become genetically different, and speciation may occur D) one or both groups will probably emigrate E) one or both groups will probably become invasive species Answer: C Diff: 2 Objective: 5.3 Evolution results in biodive ...
... B) both groups will probably become native species C) the groups will probably become genetically different, and speciation may occur D) one or both groups will probably emigrate E) one or both groups will probably become invasive species Answer: C Diff: 2 Objective: 5.3 Evolution results in biodive ...
The evolution of early Foraminifera
... period. Molecular data provide an important tool with which to investigate this otherwise cryptic period, by permitting inference of the phylogeny of extant species that may be related to ancestral forms, and by providing molecular clocks by which to estimate their divergence times. For example, mol ...
... period. Molecular data provide an important tool with which to investigate this otherwise cryptic period, by permitting inference of the phylogeny of extant species that may be related to ancestral forms, and by providing molecular clocks by which to estimate their divergence times. For example, mol ...
Declining interspecific competition during character displacement
... character displacement. Where two species are present in a lake, one is a ‘limnetic’ and the other is a ‘benthic’. Limnetics are small and slender, have many long gill rakers and a narrow gape, and forage mainly on zooplankton in open water (McPhail, 1984, 1992, 1994; Schluter and McPhail, 1992). Be ...
... character displacement. Where two species are present in a lake, one is a ‘limnetic’ and the other is a ‘benthic’. Limnetics are small and slender, have many long gill rakers and a narrow gape, and forage mainly on zooplankton in open water (McPhail, 1984, 1992, 1994; Schluter and McPhail, 1992). Be ...
Savanna herbivore dynamics in a livestock
... hartebeest was selected for closer scrutiny for four reasons. This species appeared to be the most sensitive indicator, declining by a greater proportion than any other (78% since 1991). Second, this is a sedentary species, living in groups with relatively small home ranges. Individuals on pro-wildl ...
... hartebeest was selected for closer scrutiny for four reasons. This species appeared to be the most sensitive indicator, declining by a greater proportion than any other (78% since 1991). Second, this is a sedentary species, living in groups with relatively small home ranges. Individuals on pro-wildl ...
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.