Abstract:
:Density-dependent mortality may regulate many populations, but due to an offshore larval phase in benthic marine organisms, it is often difficult to quantify the effects of mortality of arriving individuals. We added approximately 600 recruit-sized individuals onto coral reef that parallels patterns in naturally settling fish. Strong, positive density-dependent mortality occurred 3 days, 1-2 weeks, and 4 months after release. Since our study species was patchily distributed, we estimated both mean group size and overall density in a transect. Mortality was more strongly related to mean group size than overall density in a transect, indicating that recruit patchiness was important. Cohesive groups may suffer higher mortality than those spread over larger areas, even if overall density of the latter is greater. Aggregative responses of predators may occur in response to larger groups, so may have contributed to positive density-dependent mortality. Increased conspicuousness to predators and congeneric aggression are additional factors that may vary positively with group size. Tagging of recruits showed migration within but not between transects, so persistence was tantamount to survival. Standard otolith back-calculation techniques employed to reconstruct original size of tagged recruits that persisted 4 months after additions indicated that mortality was also size-dependent. Size-dependent mortality was apparent at the site with the highest mortality but not at the site with the lowest mortality, resulting in different mean body sizes of recruits between sites. Size-dependent mortality may influence estimation of growth and lead to onset of size-based maturity in these fish. Strong, positive density-dependent mortality may regulate recruitment, and if coupled with size-dependent mortality, may increase maturity rate, adding to reproductive schedules of those that survive.
journal_name
Oecologiajournal_title
Oecologiaauthors
Brunton BJ,Booth DJdoi
10.1007/s00442-003-1377-2subject
Has Abstractpub_date
2003-11-01 00:00:00pages
377-84issue
3eissn
0029-8549issn
1432-1939journal_volume
137pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Olfactory responses of parasitoids can be variable. This was shown by olfactometer experiments with females of two sibling Asobara species, larval endoparasitoids of Drosophilidae. Oviposition experiences of adult female parasitoids significantly altered their behavioural responses in microhabitat and host location. F...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379874
更新日期:1984-08-01 00:00:00
abstract::Tropical ferns are characterized by a high diversity of plant life forms, yet there have been few large-scale studies on the functional ecology of these different forms. We examined epiphytic, hemiepiphytic, and terrestrial ferns, and asked whether there are differences in the mineral nutrition and water relations acr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0723-1
更新日期:2007-08-01 00:00:00
abstract::Ecosystem-wide effects of introduced brown trout (Salmo trutta L.) and native river galaxias (Galaxiaseldoni McDowall) were studied by analysing ecosystem production budgets for two adjacent tributaries of a grassland stream-system in the South Island of New Zealand. One tributary was inhabited by brown trout, the oth...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050505
更新日期:1998-06-01 00:00:00
abstract::Intraspecific variation in behavior and diet can have important consequences for population and ecosystem dynamics. Here, we examine how differences in reproductive investment and spatial ecology influence individual diet specialization in male and female southern sea otters (Enhydra lutris nereis). We hypothesize tha...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3206-1
更新日期:2015-05-01 00:00:00
abstract::In order to determine the influence of the hydrogen-ion concentration on the damage exerted to lichens by sulfur dioxide gas, thalli of the species Hypogymnia physodes and Xanthoria parietina were submerged in buffer solutions of pH 2 to pH 8 and subsequently exposed to SO2 gas. Net photosynthesis was employed as a cr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00348104
更新日期:1975-12-01 00:00:00
abstract::Occurrence and diet of ten carnivorous predators (four falconiforms, four owls, and two foxes), and population levels of their mammalian prey, were monitored over 45 months at a semi-arid site in north-central Chile. Early in this period, small mammals irrupted and then declined markedly to a density 7% of that at pea...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00319020
更新日期:1992-01-01 00:00:00
abstract::Competition for space is an important process on tropical coral reefs. Few studies have examined the role sponges play in community structure despite the fact that many sponges are competitively superior to reef-building corals in space acquisition. Surveys conducted throughout the Florida Keys indicated that Chondril...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050642
更新日期:1998-11-01 00:00:00
abstract::Life history theory predicts that larger propagules should be produced when the offspring are expected to experience intense competition. This study tested whether female cowpea weevils responded to high larval or adult density by producing larger eggs. In a splitbrood design I measured the effect of density experienc...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00333313
更新日期:1995-04-01 00:00:00
abstract::This paper describes the epiphytic lichen vegetation on maple trees along an 1.1-km avenue leading from the outer suburbs of Freiburg toward the city center. A special aim of this investigation was to examine the variation in the coverage by lichens altogether and by each lichen species as a function of increasing dis...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00346838
更新日期:1977-03-01 00:00:00
abstract::Experimental plots covering a 120 years' observation period in unthinned, even-aged pure stands of common beech (Fagus sylvatica), Norway spruce (Picea abies), Scots pine (Pinus sylvestris), and common oak (Quercus Petraea) are used to scrutinize Reineke's (1933) empirically derived stand density rule [see text], N=tr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-005-0126-0
更新日期:2006-01-01 00:00:00
abstract::A rich mammalian fauna is found on islands that lie on the Sunda Shelf, a continental shelf extending from Vietnam to Borneo and Java that was periodically exposed as dry land during the Pleistocene. The correlation between log of island area and number of species is high (r 2=0.94); the slope of the curve is moderate...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379083
更新日期:1984-01-01 00:00:00
abstract::Plant population and community dynamics may be altered by increasing atmospheric CO(2) concentrations [[CO(2)]] through intraspecific variation in the responses of vegetative and reproductive growth. Although these responses may be regulated by age at flowering, little is known about the direct effects of age at flowe...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-003-1186-7
更新日期:2003-04-01 00:00:00
abstract::Data in the literature that in the Netherlands Carabus problematicus is an autumn breeder with overwintering larvae and adults have been confirmed. Pitfall catches show two peaks of adult beetles. The first small peak of activity is realized in May, the significance of which is not yet understood. The second higher pe...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00346470
更新日期:1980-05-01 00:00:00
abstract::Differential predation pressure and the probability of predation on a Batesian mimicry complex and on alternative prey were estimatedin a field experiment. The mimicry complex was composed of a noxious model (Eleodes obscura (Say)) and a palatable mimic (Stenomorpha marginata (LeConte)). House crickets (Acheta domesti...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00397872
更新日期:1988-09-01 00:00:00
abstract::After herbivore attack, plants launch a suite of direct and indirect defense responses that must be coordinated if plants are to realize a fitness benefit from these responses. Here we characterize the volatile emissions in the native tobacco plant, Nicotiana attenuata Torr. ex Wats., that are elicited by tobacco horn...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420000389
更新日期:2000-08-01 00:00:00
abstract::This is the first in a series of papers on the growth, photosynthetic rate, water and nutrient relations, root distribution and mycorrhizal frequency of two Norway spruce forests at different stages of decline. One of the stands was composed of green trees only while the other included trees ranging in appearance from...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378810
更新日期:1988-02-01 00:00:00
abstract::Relatively few published food webs have included parasites, and in this study we examined the animal community in a stream across eight contiguous seasons to test how inclusion of helminth parasites alters the topology or structure of the food web. Food webs constructed for each season and analyzed using common binary...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-0999-9
更新日期:2008-06-01 00:00:00
abstract::Stemflow inputs of magnesium and potassium were measured from 57 canopy trees representing eight species under heavy rainfall conditions in two tropical forest sites in northeast Queensland, Australia. In the premontane tropical moist forest site on the Atherton Tableland, the stemflow input per unit trunk basal area ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379506
更新日期:1986-10-01 00:00:00
abstract::Plant invasions can have substantial consequences for the soil ecosystem, altering microbial community structure and nutrient cycling. However, relatively little is known about what drives these changes, making it difficult to predict the effects of future invasions. In addition, because most studies compare soils fro...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-011-2022-0
更新日期:2011-11-01 00:00:00
abstract::As humans continue to alter tropical landscapes across the world, it is important to understand what environmental factors help determine the persistence of biodiversity in modified ecosystems. Studies on well-known taxonomic groups can offer critical insights as to the fate of biodiversity in these modified systems. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-015-3495-z
更新日期:2016-03-01 00:00:00
abstract::Many ecological studies rely heavily on chemical analysis of plant and animal tissues. Often, there is limited time and money to perform all the required analyses and this can result in less than ideal sampling schemes and poor levels of replication. Near infrared reflectance spectroscopy (NIRS) can relieve these cons...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050591
更新日期:1998-09-01 00:00:00
abstract::The demographic and ecological characteristics of island populations of small mammals have received increasing attention in recent years, but few studies have compared the behavioral characteristics of island populations with those of mainland populations. Behavior is considered an important variable because it is bel...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00540916
更新日期:1981-01-01 00:00:00
abstract::Previous studies have shown that green sunfish, Lepomis cyanellus, have strong effects on the activity, habitat use, social interactions and mating dynamics of a stream-dwelling water strider, Aquarius remigis (family Gerridae, hence, gerrids). In nature, however, stream pools often contain not just sunfish and water ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00328544
更新日期:1996-01-01 00:00:00
abstract::The tadpoles of two anuran species, Rana sylvatica and Xenopus laevis, were fed various concentrations of two algae, Anabaena sphaerica (large filaments) and Chlorella pyrenoidosa (small unicells). Filtering rates were measured indirectly with a Coulter Counter system; buccal pumping rates were observed directly.Exper...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00345438
更新日期:1979-01-01 00:00:00
abstract::Resource competition is commonly invoked to explain negative effects of invasive plants on native plant abundance. If invasives out-compete natives, global changes that elevate resource availability may interact with invasives to exacerbate impacts on native communities. Indeed, evidence is accumulating that elevated ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0697-z
更新日期:2007-07-01 00:00:00
abstract::Natural history collections are now being championed as key to broad ecological studies, especially those involving human impacts in the Anthropocene. However, collections are going through a crisis that threatens their present and future value, going beyond underfunding/understaffing to a more damaging practice: curr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04620-0
更新日期:2020-03-01 00:00:00
abstract::We describe differences in senescence among populations of grasshoppers that occur along an altitudinal gradient in the Sierra Nevada, California. Experimental males from five populations of the Melanoplus sanguinipes/devastator sibling species complex were reared in each of two thermal culture conditions from eggs of...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050246
更新日期:1997-07-01 00:00:00
abstract::Hawaiian lobeliads have radiated into habitats from open alpine bogs to densely shaded rainforest interiors, and show corresponding adaptations in steady-state photosynthetic light responses and associated leaf traits. Shaded environments are not uniformly dark, however, but punctuated by sunflecks that carry most of ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0936-3
更新日期:2008-03-01 00:00:00
abstract::Spatial and temporal variation in resource distribution affect the movement and foraging behavior of many animals. In the case of animal-dispersed trees, numerous studies have addressed masting-the synchronized variation in seed production between years-but the fitness consequences of spatial variation in seed product...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-016-3557-x
更新日期:2016-05-01 00:00:00
abstract::The time at which plants emerge from the soil is shown to be correlated with both survival and growth in each of four years in a plant community emerging after yearly plowing. For all seven species investigated, earlier emerging individuals generally had both a higher biomass and probability of survival. There were di...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379278
更新日期:1987-05-01 00:00:00