Making mountains out of barnacles: the dynamics of acorn barnacle hummocking. From: Ecology | Date: June 1, 1998| Author: Bertness, Mark D.; Gaines, Steven D.; Yeh, Su Ming | COPYRIGHT 1998 Ecological Society of America. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Like plants, sessile invertebrates are often morphologically modified at high densities. At high densities acorn barnacles commonly form hummocks of tall, densely packed individuals. We examined hummock development and its consequences on filter feeding and growth in the northern acorn barnacle, Semibalanus balanoides. Hummocking occurs in response to high recruitment densities and growth rates, which intensify competition for primary substrate space. In the field, hummocks are more common at...

Related newspaper, magazine, and journal articles from HighBeam Research

	Making mountains out of barnacles: the dynamics of acorn barnacle hummocking. Ecology ; INTRODUCTION In plant and sessile invertebrate assemblages space is frequently limited, and competition with adults can preclude successful juvenile establishment. As a result, recruitment is commonly restricted to sites where adults have been killed (for plant examples see Platt 1975, Brokaw 1985,
	TESTING THE RELATIVE CONTRIBUTION OF POSITIVE AND NEGATIVE INTERACTIONS IN ROCKY INTERTIDAL COMMUNITIES. Ecology ; JONATHAN M. LEVINE [1] AUBREY O. INGRAHAM [2] Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island 02912 USA Abstract. In contrast to many other biotic forces, such as competition and predation, the role played by habitat modification by plants and sessile
	Phenotypic plasticity of HSP70 and HSP70 gene expression in the pacific oyster (Crassostrea gigas): implications for thermal limits and induction of thermal tolerance. The Biological Bulletin ; Introduction Marine invertebrates tolerate a remarkable array of natural and anthropogenic stresses. Although the nearshore environment supports great invertebrate diversity, it is physiologically challenging. Littoral invertebrates routinely encounter anoxia, osmotic stress, and wide thermal
	Tide prediction. (Equipment News). Marine Log ; TotalTide 2002, a Windows-based software program from the United Kingdom Hydrographic Office, provides SOLAS vessels with an even more comprehensive range of instant tidal height and tidal stream information and has approved by the U.K.'s Maritime & Coastguard Agency as meeting carriage
	NSW: Report recommends no action against ferry master = 2 AAP General News (Australia) ; AAP General News (Australia) 12-15-1998 NSW: Report recommends no action against ferry master = 2 At the time of the accident the ferry was following ...
	Tidal overlay & dynamic ECDIS Sea Technology ; A Giant Step from Paper Charts & Tide Tables, ENC Is Likely to Replace the Former Soon While ECDIS Is Becoming Commercial Reality The electronic navigational chart (ENC) is likely to replace the paper chart in the near future, at least for the SOLAS class vessels, and the electronic chart
	Growth rates of ribbed mussels in six estuaries subject to different nutrient loads. The Biological Bulletin ; Atlantic ribbed mussels (Geukensia demissa) inhabit the intertidal zone in estuarine salt marshes and feed by filtering phytoplankton and particulate organic matter (POM) from the water (1). Nutrients from anthropogenic sources are stimulating production of organic matter in estuaries worldwide
	Braintree plans summer fun for its residents The Patriot Ledger Quincy, MA ; BRAINTREE - The town's summer activities will begin with the opening of Sunset Lake and Smith Beach on Saturday. Certified lifeguards will be on duty from 10 a.m. to 7 p.m. at both locations. Lifeguard hours at Smith Beach are assigned daily based on the river tidal heights. The hours will be
	CLIMATE-RELATED CHANGE IN AN INTERTIDAL COMMUNITY OVER SHORT AND LONG TIME SCALES. Ecological Monographs ; Abstract. Changes in the abundance of macroinvertebrate species documented in a rocky intertidal community between surveys in 1931-1933 and 1993-1996 are consistent with the predicted effects of recent climate warming. We resampled 57 0.84-[m.sup.2] plots of an intertidal transect first surveyed by
	THE IMPACTS OF A NONINDIGENOUS MARINE PREDATOR IN A CALIFORNIA BAY. Ecology ; EDWIN D. GROSHOLZ [1,4] GREGORY M. RUIZ [2] CHERYL A. DEAN [3] KIM A. SHIRLEY [3] JOHN L. MARON [3] PETER G. CONNORS [3] Abstract. Coastal marine ecosystems worldwide are being altered rapidly by the invasion of nonindigenous species. Unlike terrestrial and freshwater systems, the impacts of an

See all results.