Towards a Broad Ecological Model of Fish Communities and Fisheries

Regier, Henry A.; Henderson, H. F.

doi:10.1577/1548-8659(1973)102<56:tabemo>2.0.co;2

Cited by 50 publications

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“…Stability, in the sense of regulation (Regier and Henderson 1973), is thought to be positively comlated with diversity (Margalef 1968), leading some investigators to recommend its use as an index of fish community health (Regier and Loftus 1972;Regier and Henderson 1973). Our measurements of diversity provide an initial scaling of this index and an opportunity to evaluate its performance by comparison with other indices.…”

Section: Species Diversity Community Mean Weight and Ecological Sucmentioning

confidence: 99%

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Abundance Patterns and Community Attributes of Fishes Relative to Environmental Gradients

Marshall¹,

Ryan²

1987

Can. J. Fish. Aquat. Sci.

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Marshall, T. E., and P. A. Ryan. 1987. Abundance patterns and community attributes of fishes relative t o environmental gradients. Can. I. Fish. Aquat. Sci. M(Suppl. 2): 198-215.Seventy-five lakes s f the Canadian boreal forest were examined for patterns of fish species abundance and community structure in relation to gradients of four environmental variables: (1) Bake area, (2) mean depth,(3) Secchi disk transparency, and (4) rnorpkoedaphic index (MEI). Mean depth appeared to exert the greatest control o n the relative abundance of the species considered. The remaining variables influenced abundance i n unique ways, although, as witk mean depth, this influence was mainly a consequence of changes in thermal and nutrient regimes. An examination s f lower trophic components indicated that these regimes appear to structure food webs, with distinctly different patterns in food webs occurring in dimictic and polymictic Bakes. Major shifts in aquatic biota occur in the transition region between Bake types. Lakes witk these characteristics are at a Bower successional state due t o environmental unpredictability, as demonstrated by an increasing importance of rover K-strategists.O n a etudie 75 lacs de la for& boreale canadienne pour la recherche de tendances de I'abondance des especes de poisscln et de la structure des comrnunautes par rapport aux gradients de quatre variables envirsnnernentales : 1) superficie d u lac, 2) profondeur msyenne, 3) transparenceau disque de Seccki et4) indice rnorpho6daphique. La prsfondeur moyenne sernble &re le parametre qui exer~ait la plus grande influence sur B'abondance relative des especes etudi6es. Les autresvariables influaient sur I'abondance de faqon particuliere mais, comrme dans le cas de la profondeur moyenne, cette influence resultait surtout de modifications d u regime thermiqkse et de celui des rnatieres nutritives. Un examen des csrnposantes trophiques inferieures a montre queces regimes structuraient Bes reseauxalimentaires qui prgsentaient des allures tres differentes dans les lacs dimictiques et polymictiques. Les princigales modifications du biote aquatique, entre lacs de types differents, etaient notees dans la none de transition. Les lacs presentant ses caracteristiques sont un niveaee evolutif inferieur A cause de facteuas environnementaux imprevisibles, cornme le demontre la predominance de plus en plus importante des strategies r sur les strategies K.

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Section: Species Diversity Community Mean Weight and Ecological Sucmentioning

confidence: 99%

“…A synoptic survey of species abundance patterns, and community characteristics such as species diversity and community mean weight (average size of fish), would contribute to the development of these models (i.e. Regier and Henderson 1973;Ryder and Kerr 1978), and others.…”

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confidence: 99%

Abundance Patterns and Community Attributes of Fishes Relative to Environmental Gradients

Marshall¹,

Ryan²

1987

Can. J. Fish. Aquat. Sci.

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“…As a result, these specialized fishes are less resilient to large environmental perturbations (Regier and Henderson 1973) and are vulnerable to pressures from overfishing (Balon 1 9 7 4~) .…”

Section: Introductionmentioning

confidence: 99%

Structure and production of fish communities in tropical rain forest streams of northern Borneo

Watson¹,

Balon²

1984

Can. J. Zool.

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1984. Structure and production of fish communities in tropical rain forest streams of northern Borneo. Can. J. Zool. 62: [927][928][929][930][931][932][933][934][935][936][937][938][939][940]. Tropical fish communities are often assumed to be more productive than temperate communities. To test this belief, fishes from tributaries of the tropical rain forest Baram River. Sarawak, Malaysia were quantitatively collected with a piscicide and production was calculated by the Ricker algebraic method. Temperature was not considered a ma-lor factor influencing production among different climatic regions since the average production in the Baram (76.7 kg-ha ' .year ' ) was less than in temperate Grand River, Ontario (279.4 kg ha ' . year ' ) and Nida River. Poland ( 121.0 kg. ha ' -year ' ) . Analysis of physical habitat characteristics, community-structure variables, and production estimates from Baram streams indicated production was controlled mainly by nutrient limitations ( P < 0.01) while close species packing maximized production by efficiently utilizing the limited resources available. In highly competitive and diverse communities, Baram fishes have probably developed specializations which make them particularly vulnerable to environmental perturbations or overexploitation. An estimated fish catch of 14.2-19.6 kg. h a ' . y e a r 1 by Baram subsistence fishermen was already within the estimated range for maximum sustainable yield (7.9-20.9 kg-ha-'-year ' ) . Therefore, it is recommended that research on community ecology should precede expansion of artisanal fisheries.WATSON, D. J., et E. K. BALON. 1984. Structure and production of fish communities in tropical rain forest streams of northern Borneo. Can. J. Zool. 62: 927-940. On croit generalement que les communautes tropicales de poissons sont plus productives que les communautks temperkes. Afin de mettre cette hypothese a I'kpreuve, des poissons provenant de tributaires du Baram, dans la foret tropicale ombrophile a Sarawak, en Malaysie, ont it6 echantillonnis quantitativement au moyen d'un piscicide et la production a kt6 calcul6e par la mithode algCbrique de Ricker. La temperature ne semble pas influencer fortement la production dans les differentes rkgions climatiques puisque la production moyenne du Baram (76,7 kg. ha ' . an ' ) est infirieure a celle de la riviere Grand en Ontario (279,4 kg h a ' -an-') et a celle de la Nida en Pologne (1 2 1,O kg. ha ' -an I ) . L'analyse des caractkristiques physiques de l'habitat, les variables de la communaute et I'estimation de la production dans les ruisseaux du Baram indiquent que la production est surtout fonction des ClCments nutritifs ( P < 0,01), alors que la presence d'un grand nombre d'especes voisines maximise la production en permettant l'utilisation des ressources disponibles limitees. Dans les communautks tres diversifiees oh il y a beaucoup de competition, les poissons du Baram ont probablement acquis des spkcialisations qui les rendent particulierement vulnkrables des perturbations ou la surexploitation d...

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“…Then we could speak in such terms as Regier and Henderson's (1973) "stress-response~model, about how various stresses, such as harvesting and eutrophication, tend to (1) reduce spatial heterogeneity and species diversity; (2) increase temporal variability; (3) drive the body size distribution toward smaller forms (species) that turn over more rapidly and erratically;…”

Section: Compressed Representation Of Ecosystem Efrecbmentioning

confidence: 99%

Adaptive Management of Renewable Resources.

Walters¹

1987

Biometrics

526

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In Adaptive Management of Renewable Resources, noted theoretician Carl Walters challenges the traditional approach to dealing with uncertainty in the management of such renewable resources as fish and wildlife. He argues that scientific understanding will come from the experience of management as an ongoing, adaptive, and experimental process, rather than through basic research or the development of ecological theory.In the opening chapters, Walters reviews approaches to formulating management objectives as well as models for understanding how policy choices affect the attainment of these objectives. In subsequent chapters he presents various statistical methods for understanding the dynamics of uncertainty in managed fish and wildlife populations and for seeking optimum harvest policies in the face of uncertainty. Walters concludes with a look at prospects for adaptive management of complex systems, emphasizing such human factors involved in decision making as risk aversion and conflicting objectives as well as biophysical factors. Throughout the text he uses dynamic models and Bayesian statistical theory as tools for understanding the behavior of managed systems, and he illustrates these tools with simple graphs and plots of data from representative cases.This text/reference will serve researchers, graduate students, and resource managers who formulate harvest policies and study the dynamics of harvest populations, as well as analysts (modelers, statisticians, and stock assessment experts) who are concerned with the practice of policy design.

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Towards a Broad Ecological Model of Fish Communities and Fisheries

Cited by 50 publications

References 0 publications

Abundance Patterns and Community Attributes of Fishes Relative to Environmental Gradients

Abundance Patterns and Community Attributes of Fishes Relative to Environmental Gradients

Structure and production of fish communities in tropical rain forest streams of northern Borneo

Adaptive Management of Renewable Resources.

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