Abstract:
:The effects of bannertail kangaroo rat (Dipodomys spectabilis) mounds and associated soil-surface disturbance on plant species composition and diversity in the Chihuahuan Desert were examined with multivariate analysis. Kangaroo rat mounds created disturbance gaps and contributed to local species diversity by creating microhabitats that supported unique plant communities. These microhabitats supported populations of species that were relatively rare in surrounding areas. The diversity observed at the whole habitat level resulted from (1) local spatial heterogeneity, because the mounds offered microenvironments with distinctive nutrient, water, and light conditions; and (2) local patterning of disturbance, because the digging and traffic of the kangaroo rats maintained high levels of soil disturbance at and near the mounds. At a finer scale, species diversity was highest in the area immediately adjacent to active and inactive mounds, and was lower on both the highly disturbed soil of the mounds and in the relatively undisturbed area between mounds. Lowest species diversity occurred on inactive mounds. Annual plant biomass was much greater on mounds than in inter-mound areas. The results support the predictions that intermediate levels of disturbance and small-scale environmental heterogeneity contribute to supporting high species diversity.
journal_name
Oecologiajournal_title
Oecologiaauthors
Guo Qdoi
10.1007/BF00328605subject
Has Abstractpub_date
1996-04-01 00:00:00pages
247-256issue
2eissn
0029-8549issn
1432-1939pii
10.1007/BF00328605journal_volume
106pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Every summer the deepest parts of the inner Flensburg fjord are subject to O2-deficiency lasting from a few weeks to several months. In spring, however, populations of Metridium senile can be found in these areas, in spite of the fact that frequently the local anoxic period of the previous summer has been 2-3 times lo...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00384295
更新日期:1985-09-01 00:00:00
abstract::The contribution of small mammals to nitrogen cycling could have repercussions for the producer community in the maintaining or perhaps magnifying of nitrogen availability. Our objective was to model nitrogen outputs (deposition of feces and urine) of small mammals in an old-field ecosystem and estimate the amount of ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-005-0004-9
更新日期:2005-07-01 00:00:00
abstract::The effects of caterpillar food supply on the breeding performance of a population of the Japanese great tit Parus major minor were investigated. Since more than 90% of the food items in our study site were caterpillars living on trees, we estimated the food availability using 20 frass traps per hectare. The sampling ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050475
更新日期:1998-05-01 00:00:00
abstract::Previous publications have reported on investigations of CO2 exchange in the desert lichenRamalina maciformis both in its natural habitat in the Negev and in the laboratory. Utilizing laboratory data, net photosynthesis and dark respiration were expressed as mathematical functions of the most important environmental f...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00751603
更新日期:1977-09-01 00:00:00
abstract::Although plant growth is generally recognized to be influenced by allocation to defense, genetic background (e.g., inbreeding), and gender, rarely have those factors been addressed collectively. In quaking aspen (Populus tremuloides Michx.), phenolic glycosides (PGs) and condensed tannins (CTs) constitute up to 30 % o...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-016-3577-6
更新日期:2016-06-01 00:00:00
abstract::In this study we assessed the effectiveness of rodents as dispersers of Quercus ilex in a patchy landscape in southeastern Spain. We experimentally followed the fates of 3,200 marked and weighed acorns from dispersal through the time of seedling emergence over three years. Rodents handled about 99% of acorns, and disp...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0928-3
更新日期:2008-03-01 00:00:00
abstract::In this study we tested the hypothesis that the presence of chemical stimuli from a hungry predator would initiate anti-predator responses, while stimuli from a satiated predator would not. We used chemical stimuli released from starved perch (Perca fluviatilis) and from satiated perch (predator). As prey we used adul...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050221
更新日期:1997-07-01 00:00:00
abstract::Canada mayflower (Maianthemum canadense Desf.), a rhizomatous, perennial herb, was the subject of a 2-year field experiment that examined two factors potentially affecting fruit and seed production: pollen addition and ramet isolation. Ramets were either open pollinated or overpollinated by hand to supplement natural ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050155
更新日期:1997-04-01 00:00:00
abstract::Characterizing the causes of spatial and temporal variation in parasite-induced mortality under natural conditions is crucial to better understanding the factors driving host population dynamics. Our goal was to quantify this variation in the amphipod Paracalliope novizealandiae, a second intermediate host of the trem...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1593-5
更新日期:2010-07-01 00:00:00
abstract::The objective of this study was to separate the effects of plant biomass and growth rate on vegetative reproduction in two species of cat-tail, Typha latifolia and T. angustifolia. Replicate clones of both species were grown under conditions of 100%, 42%, 24%, and 9% full sunlight with harvests at 41, 70, and 91 days ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00348030
更新日期:1981-08-01 00:00:00
abstract::The family of orchids involves a number of critically endangered species. Understanding of drivers of their landscape distribution could provide a valuable insight into their decline. Our objectives were to develop models predicting distribution of selected orchid species-four co-occurring forest orchid species, Cepha...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-019-04427-8
更新日期:2019-06-01 00:00:00
abstract::Body size at metamorphosis is a critical trait in the life history of amphibians. Despite the wide-spread use of amphibians as experimental model organisms, there is a limited understanding of how multiple abiotic and biotic factors affect the variation in metamorphic traits under natural conditions. The aim of our st...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1586-4
更新日期:2010-07-01 00:00:00
abstract::Habitat fragmentation poses an inherent problem for metacommunity dynamics, as dispersal among communities is hindered by increasing isolation and the loss of patches. Wetlands are one such system that have undergone excessive destruction and fragmentation in recent years. Zooplankton within these communities have his...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0704-4
更新日期:2007-08-01 00:00:00
abstract::The presence of spines on woody plants has been shown to limit the loss of foliage to large mammalian browsers by restricting both bite size and biting rate. We tested the hypothesis that plant spines are also an effective defense against browsing by small mammals, such as rodents, that climb within the canopy of shru...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050371
更新日期:1998-01-01 00:00:00
abstract::Ecological systems have naturally high interannual variance in phenology. Component species have presumably evolved to maintain appropriate phenologies under historical climates, but cases of inappropriate phenology can be expected with climate change. Understanding controls on phenology permits predictions of ecologi...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1789-8
更新日期:2011-01-01 00:00:00
abstract::Breeding ecology and mating patterns of the western toad, Bufo boreas, were examined in three large explosively breeding populations in the Oregon Cascade Mountains. Two mating patterns occurred variably within and among the three populations. First, a large male mating advantage was observed in two of the three popul...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379496
更新日期:1986-10-01 00:00:00
abstract::Physiological integration of connected plants of the same clone, or ramets, often increases clonal fitness when ramets differ in resource supply. However, review of the literature found that no study has directly tested the hypothesis that integration can increase the ability of clones to compete against other species...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04823-5
更新日期:2021-01-04 00:00:00
abstract::Ligia oceanica can change its colour using melanophores, the animal's reflectance varying between about 2 and 10%. Darker individuals heat up more quickly, and to higher body temperatures, than do pale ones. Colour change shows an underlying circadian rhythm, though the pattern of this rhythm varies with temperature, ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379108
更新日期:1989-03-01 00:00:00
abstract::Restoration of degraded landscapes through replantings of native vegetation has been proceeding in response to habitat loss and fragmentation and plummeting biodiversity. Little is known about whether the investments in ecological restoration have resulted in biodiversity benefits. We evaluated the potential of restor...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-1221-9
更新日期:2009-03-01 00:00:00
abstract::Carbon dioxide efflux and soil microenvironmental factors were measured diurnally in Carex aquatilus-and Eriophorum angustifolium-dominated riparian tundra communities to determine the relative importance of soil environmental factors controlling ecosystem carbon dioxide exchange with the atmosphere. Measurements were...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317851
更新日期:1992-12-01 00:00:00
abstract::The acetylene reduction method was used to measure nitrogen fixation in the phyllosphere of attached leaves of different phorophytes under natural conditions in a premontane rain forest in Costa Rica. Maximum rates of nitrogen fixation (26 ng N · cm-2 leaf area · h-1) - mainly due to the activity of two species of Scy...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050625
更新日期:1998-11-01 00:00:00
abstract::Diapause allows insects to temporally avoid conditions that are unfavorable for development and reproduction. However, diapause may incur a cost in the form of reduced metabolic energy reserves, reduced potential fecundity, and missed reproductive opportunities. This study investigated a hitherto ignored consequence o...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-006-0428-x
更新日期:2006-08-01 00:00:00
abstract::The definition of photosynthetically active radiation (Q) as the visible waveband (λ 400-700 nm) is a core assumption of much of modern plant biology and global models of carbon and water fluxes. On the other hand, much research has focused on potential mutation and damage to leaves caused by ultraviolet (UV) radiatio...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-013-2640-9
更新日期:2013-10-01 00:00:00
abstract::We obtined data on body mass and growth rates for the immature members of two groups of wild baboons in Amboseli National Park, Kenya. Data were collected without feeding, trapping, or handling. The data were separated into cross-sectional and longitudinal components, allowing both the examination of body mass-age rel...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00385038
更新日期:1987-04-01 00:00:00
abstract::Stable carbon and nitrogen isotope ratios in autotrophs, aquatic invertebrates and fishes from the Orinoco River floodplain of Venezuela reveal that microalgae, including both phytoplankton and epiphytic (attached) forms, are predominant energy sources for many aquatic animals, even though aquatic vascular plants are ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317409
更新日期:1992-03-01 00:00:00
abstract::C(4) plants are rare in cool climates, an ecological pattern attributable to their poor photosynthetic performance at low temperatures relative to C(3) species. However, some C(4) species are able to persist at high latitudes and high elevations, possibly due to the characteristics of the particular microsites they in...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-003-1369-2
更新日期:2003-11-01 00:00:00
abstract::The life history of Yucca glauca in the Great Plains was the subject of a four year field study. Data were incorporated in a stage transition model (based on rosette size) to explain how populations are maintained in spite of large regional and temporal variation in sexual reproductive success. Rosette size was found ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377060
更新日期:1986-06-01 00:00:00
abstract::We examined the response of the birch tube-maker Acrobasis betulella Hulst (Lepidoptera: Pyralidae) to habitat patch isolation and edges. Density of A.␣betulella larva was higher on distant islands than on islands close to the shore. Following experimental removal of all larvae from the islands, adults were able to re...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050134
更新日期:1997-03-01 00:00:00
abstract::Increased biological diversity due to invasion by non-indigenous species (NIS) is a global phenomenon with potential effects on trophic interactions and ecosystem processes in the invaded habitat. We assessed the effects of resource availability and invasion of three non-indigenous invertebrate grazers (two crustacean...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-011-2061-6
更新日期:2012-01-01 00:00:00
abstract::Local adaptation and population differentiation of plants are well documented, but studies on interactions with natural enemies are rare. In particular, evidence for plant adaptation to the local biotic environment, such as herbivores remains poor. We used the black mustard Brassica nigra, an annual species of river v...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1798-7
更新日期:2011-04-01 00:00:00