Ecology back issues from February 2000:
MATERNAL CARE IN THE SUBANTARCTIC FUR SEALS ON AMSTERDAM ISLAND.
Feb 01, 2000; ... JEAN-YVES GEORGES [1,2] CHRISTOPHE GUINET [1] Abstract. This paper reports the first study of maternal input and care from birth to weaning in a fur seal with a long pup-rearing period: the subantarctic fur seal Arctocephalus tropicalis breeding on the temperate ...
SEX DIFFERENCES IN PARENTAL INVESTMENT AND CHICK GROWTH IN WANDERING ALBATROSSES: FITNESS CONSEQUENCES.
Feb 01, 2000; ... Abstract. Parents should adjust expenditure on parental care so as to maximize fitness, but quantitative data are sparse, particularly for sexually dimorphic species. We use data from two breeding seasons to investigate the fitness consequences of variation in parent provisioning behavior ...
PATTERNS OF NEST PREDATION CONTRIBUTE TO POLYGYNY IN THE GREAT REED WARBLER.
Feb 01, 2000; ... BENGT HANSSON [1] Abstract. According to the polygyny threshold model, females are compensated for the cost of sharing a territory with other females by breeding in territories of higher quality than those of monogamously mated females. In the polygynous Great Reed Warbler ...
RESPONSE OF MALLARD DUCKLINGS TO VARIATION IN HABITAT QUALITY: AN EXPERIMENT OF FOOD LIMITATION.
Feb 01, 2000; ... KJELL SJOBERG [1,4] HANNU POYSA [2] JOHAN ELMBERG [1] PETRI NUMMI [3] Abstract. Occurrence of Mallard (Anas platyrhynchos) pairs and broods was studied on 86 boreal lakes in two areas in south Finland during 1988--1997 (35 lakes) and 1989--1996 ...
STRESS AND DEVELOPMENTAL STABILITY: VEGETATION REMOVAL CAUSES INCREASED FLUCTUATING ASYMMETRY IN SHREWS.
Feb 01, 2000; ... ALEXANDER V. BADYAEV [1] Division of Biological Sciences, University of Montana, Missoula, Montana 59812-1002 USA Abstract. Environmental stress can increase phenotypic variation in populations by affecting developmental stability of individuals. While such increase ...
ICE NUCLEI IN SOIL COMPROMISE COLD HARDINESS OF HATCHLING PAINTED TURTLES (CHRYSEMYS PICTA).
Feb 01, 2000; ... JON P. COSTANZO [1,3] JACQUELINE D. LITZGUS [1] JOHN B. IVERSON [2] RICHARD E. LEE, JR. [1] Abstract. Hatchling painted turtles (Chrysemys picta) commonly overwinter within their natal nests and survive exposure to temperatures as low as - ...
BIODIVERSITY, DENSITY COMPENSATION, AND THE DYNAMICS OF POPULATIONS AND FUNCTIONAL GROUPS.
Feb 01, 2000; ... PETER J. MORIN [1] Abstract. Species richness can affect both the size and stability of populations. Many simple theories predict that complex speciose communities should be less stable than simple ones. In contrast, stability of collective community attributes, such as ...
GRADIENT OF FISH PREDATION ALTERS BODY SIZE DISTRIBUTIONS OF LAKE BENTHOS.
Feb 01, 2000; ... STEVEN C. BLUMENSHINE [1,3] DAVID M. LODGE [1] JAMES R. HODGSON [2] Abstract. We used normalized size spectra analysis (originally developed in the study of pelagic communities) and a fish bioenergetics model to examine whether predation by fishes affects ...
COMPENSATORY DYNAMICS IN PLANKTONIC COMMUNITY RESPONSES TO pH PERTURBATIONS.
Feb 01, 2000; ... JENNIFER L. KLUG [1] JANET M. FISCHER [2,4] ANTHONY R. IVES [1] BRIAN DENNIS [3] Abstract. Compensatory population dynamics, in which species that decline in response to an environmental perturbation are replaced by similar species, may be ...
THE GENERALITY OF FIELD EXPERIMENTS: INTERACTIONS BETWEEN LOCAL AND BROAD-SCALE PROCESSES.
Feb 01, 2000; ... SIMON F. THRUSH [1,3] JUDI E. HEWITT [1] VONDA J. CUMMINGS [1] MALCOLM O. GREEN [1] GREIG A. FUNNELL [1] MICHELLE R. WILKINSON [2] Abstract. Linking the results of localized field experiments to generalities about the ...
NITROGEN BIOGEOCHEMISTRY IN THE OLIGOHALINE ZONE OF A NEW ENGLAND ESTUARY.
Feb 01, 2000; ... BRUCE J. PETERSON [1] ROBERT M. HOLMES [1,3] LINDA A. DEEGAN [1] JEFFREY E. HUGHES [1] BRIAN FRY [2,4] Abstract. We investigated nitrogen cycling in the oligohaline zone (the low-salinity region where river water first enters the ...
NITROGEN FLOW THROUGH THE FOOD WEB IN THE OLIGOHALINE ZONE OF A NEW ENGLAND ESTUARY.
Feb 01, 2000; ... JEFFREY E. HUGHES [1,3] LINDA A. DEEGAN [1] BRUCE J. PETERSON [1] ROBERT M. HOLMES [1] BRIAN FRY [2,4] Abstract. We introduced tracer levels of [N.sup.15]-enriched nitrate into the oligohaline reach of the Parker River estuary ...
PLANT CARBON--NUTRIENT INTERACTIONS CONTROL [CO.sub.2] EXCHANGE IN ALASKAN WET SEDGE TUNDRA ECOSYSTEMS.
Feb 01, 2000; ... LORETTA C. JOHNSON [1,5] GAIUS R. SHAVER [2] DEB H. CADES [3] EDWARD RASTETTER [2] KNUTE NADELHOFFER [2] ANNE GIBLIN [2] JIM LAUNDRE [2] AMANDA STANLEY [4] Abstract. We explored the long-term (8-yr) ...
RELATIVE IMPORTANCE OF ABIOTICALLY INDUCED DIRECT AND INDIRECT EFFECTS ON A SALT-MARSH HERBIVORE.
Feb 01, 2000; ... DANIEL C. MOON [1] Abstract. Few studies have attempted to determine experimentally the relative importance of direct and indirect effects of host plants on herbivorous insects in the field. This study identifies important direct and indirect effects of a coastal plant on its ...
MECHANISMS AND DENSITY DEPENDENCE OF BENEFIT IN AN ANT-MEMBRACID MUTUALISM.
Feb 01, 2000; ... MANUEL A. MORALES [1] Abstract. I examined mechanisms and patterns of benefit for the membracid (treehopper) Publilia concava tended by the ant Formica obscuriventris to test two hypotheses: that treehoppers benefit from ant attendance only by protection from predators, and that ...
MYCOPHAGOUS MITES AND FOLIAR PATHOGENS: LEAF DOMATIA MEDIATE TRITROPHIC INTERACTIONS IN GRAPES.
Feb 01, 2000; ... ANDREW P. NORTON [1] GREG ENGLISH-LOEB [1] DAVID GADOURY [2] ROBERT C. SEEM [2] Abstract. Acarodomatia are small structures found on the underside of the leaves of many woody plant species. Several taxa of nonphytophagous mites are frequently ...
HOST-RANGE EVOLUTION: ADAPTATION AND TRADE-OFFS IN FITNESS OF MITES ON ALTERNATIVE HOSTS.
Feb 01, 2000; ... ANURAG A. AGRAWAL [1] Abstract. Trade-offs in fitness on different host plants has been a central hypothesis in explaining the evolutionary specialization of herbivores. Surprisingly, only a few studies have documented such trade-offs. In this paper, I present results from a ...
CHEMICAL CONSPICUOUSNESS OF AN HERBIVORE TO ITS NATURAL ENEMY: EFFECT OF FEEDING SITE SELECTION.
Feb 01, 2000; ... J. DANIEL HARE [1] Abstract. A physical refuge from the parasitoid Aphytis melinus is provided to the California red scale Aonidiella aurantii by the interior bark substrates of citrus trees, even though scales have lower fitness on bark in the absence of A. melinus. How ...
INBREEDING EFFECTS ON RESISTANCE AND TRANSMISSION-RELATED TRAITS IN THE SILENE-MICROBOTRYUM PATHOSYSTEM.
Feb 01, 2000; ... N. J. OUBORG [1] Abstract. Inbreeding in local host populations will be a common phenomenon in host-pathogen systems that are characterized by metapopulation dynamics, i.e., frequent extinction and recolonization of local host populations by small numbers of founding ...
CONTRIBUTIONS OF AUTOGAMY AND GEITONOGAMY TO SELF-FERTILIZATION IN A MASS-FLOWERING, CLONAL PLANT.
Feb 01, 2000; ... CHRISTOPHER G. ECKERT [1] Abstract. The fitness consequences of self-fertilization are largely determined by how self-pollination occurs. Within-flower self-pollination (autogamy) may be advantageous, since it can provide reproductive assurance without much seed or pollen ...
GEOSTATISTICAL ESTIMATION VARIANCE FOR THE SPATIAL MEAN IN TWO-DIMENSIONAL SYSTEMATIC SAMPLING.
Feb 01, 2000; ... Abstract. Many ecologists use two-dimensional systematic sampling to estimate mean density of individuals over the domain sampled. They usually calculate the variance of the mean as if the sample were a simple random sample, using the unbiased estimator under this sampling design, that is, ...
CANOPY TREE TURNOVER IN OLD-GROWTH MESIC FORESTS OF EASTERN NORTH AMERICA.(Statistical Data Included)
Feb 01, 2000; ... JAMES R. RUNKLE [1] Abstract. I studied the dynamic nature of old-growth, eastern U.S. forests by addressing the following questions: (1) How much do stand density, basal area, and size structure vary over time within several old-growth remnants? (2) How do mortality and growth ...
SEEDLING DYNAMICS OVER THIRTY-TWO YEARS IN A TROPICAL RAIN FOREST TREE.
Feb 01, 2000; ... JOSEPH H. CONNELL [1,3] PETER T. GREEN [2,3,4] Abstract. We examined patterns of seedling recruitment and their underlying mechanisms in a population of Chrysophyllum sp. nov. (Sapotaceae), a shade-tolerant canopy species in mature tropical rainforest in Queensland, ...
LONG-TERM SURVIVORSHIP AND CROWN AREA DYNAMICS OF TROPICAL RAIN FOREST CANOPY TREES.
Feb 01, 2000; ... STANLEY R. HERWITZ [1,4] ROBERT E. SLYE [2] STEPHEN M. TURTON [3] Abstract. Lateral shading of direct-beam irradiation among neighboring canopy tree crowns in a nonequatorial tropical rain forest canopy was modeled as a function of solar position using a ...
ECLECTIC ECOLOGY.(Review)
Feb 01, 2000; ... Klopatek, Jeffrey M., and Robert El. Gardner, editors. 1999. Landscape ecological analysis: issues and applications. Springer-Verlag, New York. xvii + 400 p. $79.95, ISBN: 0-387-98325-2 (alk.paper). Landscape ecology was birthed as a discipline almost 20 years ago, serving to ...
SONORAN DESERT VEGETATION.(Review)
Feb 01, 2000; ... Robichaux, Robert Hall, editor. 1999. Ecology of Sonoran Desert plants and plant communities. University of Arizona Press, Tucson, Arizona. vi + 303 p. $45.00, ISBN: 0-8165-1869-6 (acid-free paper). Anyone with a serious interest in the ecology of Sonoran Desert plants and plant ...
A DIFFERENT PERSPECTIVE ON PLANT INVASIONS.(Review)
Feb 01, 2000; ... Starfinger, U., K. Edwards, I. Kowarik, and M. Williamson, editors. 1998. Plant invasions: ecological mechanisms and human responses. Backhuys Publishers, Leiden, The Netherlands. vii + 362 p. $87.50, ISBN: 90-5782-005-6. Movements of plant species to new regions are rapidly ...
HOW TO TEACH A SUCCESSFUL UNDERGRADUATE SCIENCE CLASS FOR THE FIRST TIME, AND NOT LOSE YOUR SANITY.(Review)
Feb 01, 2000; ... Uno, Gordon E. 1999. Handbook on teaching undergraduate science courses: a survival training manual. Saunders College, New York, 159 p. $15.00, ISBN: 0-03-025926-6. Congratulations! You just finished your Ph.D. or a post-doc, and moved halfway across the country to a city you ...
NATIONAL LAND-COVER PATTERN DATA.
Feb 01, 2000; ... KURT H. RIITTERS [1,5] JAMES D. WICKHAM [2] JAMES E. VOGELMANN [3] K. BRUCE JONES [4] Ecological Archives E081-004 Abstract. Land cover and its spatial patterns are key ingredients in ecological studies that consider large regions ...