scholarly journals Gradients of disturbance to an algal canopy and the modification of an intertidal community

2007 ◽  
Vol 339 ◽  
pp. 1-11 ◽  
Author(s):  
DR Schiel ◽  
SA Lilley
Keyword(s):  
Intertidal Community ◽  
Algal Canopy

scholarly journals Uniform persistence and almost periodic solutions of a nonautonomous patch occupancy model

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Hui Zhou ◽  
Jehad Alzabut ◽  
Shahram Rezapour ◽  
Mohammad Esmael Samei
Keyword(s):  
Differential Inequality ◽  
Almost Periodic Solution ◽  
Rocky Intertidal ◽  
Uniform Persistence ◽  
Almost Periodic ◽  
Patch Occupancy ◽  
Sharp Threshold ◽  
Intertidal Community ◽  
Patch Occupancy Model ◽  
Inequality Techniques

Abstract In this paper, a nonlinear nonautonomous model in a rocky intertidal community is studied. The model is composed of two species in a rocky intertidal community and describes a patch occupancy with global dispersal of propagules and occupy each other by individual organisms. Firstly, we study the uniform persistence of the model via differential inequality techniques. Furthermore, a sharp threshold of global asymptotic stability and the existence of a unique almost periodic solution are derived. To prove the main results, we construct an appropriate Lyapunov function whose conditions are easily verified. The assumptions of the model are reasonable, and the results complement previously known ones. An example with specific values of parameters is included for demonstration of theoretical outcomes.

Climate-Related, Long-Term Faunal Changes in a California Rocky Intertidal Community

Science ◽  
1995 ◽  
Vol 267 (5198) ◽  
pp. 672-675 ◽  
Author(s):  
J. P. Barry ◽  
C. H. Baxter ◽  
R. D. Sagarin ◽  
S. E. Gilman
Keyword(s):  
Rocky Intertidal ◽  
Intertidal Community

scholarly journals ZONATION AND DENSITY OF INTERTIDAL COMMUNITIES AT COASTAL AREA OF BATU HIJAU, SUMBAWA

2013 ◽  
Vol 5 (2) ◽  
Author(s):  
Fredinan Yulianda ◽  
Muhamad Salamuddin Yusuf ◽  
Windy Prayogo
Keyword(s):  
High Tide ◽  
Central Zone ◽  
Fish Distribution ◽  
Rocky Reef ◽  
Percent Cover ◽  
Substrate Type ◽  
Intertidal Communities ◽  
Intertidal Community ◽  
Sandy Substrate ◽  
Cover Density

Characteristics of coastal tidal areas of Batu Hijau vary from sandy substrate type, sandy to rocky reef with a wide expanse of intertidal ranges from 100 meters to 350 meters. To find out zoning intertidal community,the observation conducted at five locations intertidal beach, each consisting of three zones: the high tide, middle tide and low tide. Living structure in tidal areas of coastal Batu Hijau, Sumbawa consists of the main communities and associated biota. The main intertidal community composed of coral, seagrass, algae, and other fauna, while the intertidal biota associated with tidal habitat consists of a group of molluscs, echinoderm, crustacean, worms and fish. Distribution of intertidal communities formed three zones consisting of (1) seagrass (21.3%) in the upper zone (high tide), (2) algae (35.5%) in the central zone (mid tide), and (3) coral (28.5%) and algae (42.5%) in the lower zone (low tide). The main groups of biota in the form of tidal zoning system consisting of two groups of molluscs (51.12%) in the upper zone, while the echinoderms that predominate in the central zone (36.96%) and lower (66.89%). No significant differences between the structure and composition of marine intertidal communities in September 2011 (rainy season) and April 2012 (dry season). Keywords: intertidal (tidal), percent cover, density, community, biota

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