Burrow Distributions and Population Estimates for the Fiddler Crabs Uca spinicarpa and Uca longisignalis in a Gulf of Mexico Salt Marsh

Mouton, Edmond C.; Felder, Darryl L.

doi:10.2307/1352651

Cited by 79 publications

(58 citation statements)

References 18 publications

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“…Even if there was no correlation between fi ddler crabs (all species) and burrows in the present study, the results were often the opposite from the results by Genoni (1985). Mouton and Felder (1996) investigated the quantitative distribution of U. spinocarpa and U. longisinalis by quantitatively counting the number of Uca burrows along transects in a Gulf of Mexico salt marsh. However, no studies were performed regarding the number of individuals (and species) living in these burrows.…”

Section: An Overview Of Symbiont Bleaching In the Epiphyticcontrasting

confidence: 85%

Proceedings of the Smithsonian Marine Science Symposium

Lang¹,

Macintyre²,

Rützler³

2009

Smithsonian Contributions to the Marine Sciences

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s m i t h s o n i a n c o n t r i b u t i o n s t o t h e m a r i n e s c i e n c e s • n u m b e r 3 8 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTIONEmphasis upon publication as a means of "diffusing knowledge" was expressed by the fi rst Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Botany Smithsonian Contributions in History and Technology Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Museum Conservation Smithsonian Contributions to Paleobiology Smithsonian Contributions to ZoologyIn these series, the Institution publishes small papers and full-scale monographs that report on the research and collections of its various museums and bureaus. The Smithsonian Contributions Series are distributed via mailing lists to libraries, universities, and similar institutions throughout the world.Manuscripts submitted for series publication are received by the Smithsonian Institution Scholarly Press from authors with direct affi liation with the various Smithsonian museums or bureaus and are subject to peer review and review for compliance with manuscript preparation guidelines. General requirements for manuscript preparation are on the inside back cover of printed volumes. For detailed submissions requirements and to review the "Manuscript Preparation and Style Guide for Authors," visit the Submissions page at www.scholarlypress.si.edu. The paper used in this publication meets the minimum requirements of the American National Standard for Permanence of Paper for Printed Library Materials Z39. Foreword N early two-thirds of Earth's surface is covered by the ocean, a global system essential to all life. Impacts on one part of the ocean can have worldwide effects. The ocean moderates our climate, provides valuable resources, and produces at least half the oxygen we breathe: it makes our planet livable. We know little, however, about the physical, chemical, geological, and biological aspects of this crucial life support system. s m i t h s o n i a n c o n t r i b u t i o n s t o t h e m a r i n S M I T H S O N I A N C O N T R I B U T I O N S T O T H E M A R I N E S C I E N C E S MARINE BIODIVERSITY, EVOLUTION, AND SPECIATION S M I T H S O N I A N C O N T R I B U T I O N S T O T H E M A R I N E S C I E N C E S i i i • S M I T H S O N I A N C O N T R I B U T I O N S T O T H E M A R I N E S C I E N C E SThe Smithsonian Institution, in efforts to increase knowledge about the ocean, has established a ...

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Section: An Overview Of Symbiont Bleaching In the Epiphyticcontrasting

confidence: 85%

Proceedings of the Smithsonian Marine Science Symposium

Lang¹,

Macintyre²,

Rützler³

2009

Smithsonian Contributions to the Marine Sciences

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“…Modifications of the second maxilliped setae have been recorded in fiddler crabs as an adaptation to inhabiting different kinds of substratum (Miller, 1961;Icely and Jones, 1978;Thurman II, 1987;Maitland, 1990;Mounton and Felder, 1996). These modifications are important in the ecology of Uca species and can be used to explain their distribution in the mangrove forests (Jones, 1984).…”

Section: Discussionmentioning

confidence: 99%

“…Among the substratum characteristics, organic matter and water content, salinity, temperature and granulometric composition of sediments play an important role in fiddler crab distribution in mangrove forests (Frith and Brunenmeister, 1980;EwaOboho, 1993;Reinsel and Rittschof, 1995;Mounton and Felder, 1996).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of fiddler crabs (Genus <i>Uca</i>) in a tropical mangrove of northeast Brazil

Bezerra¹,

Dias²,

Santana³

et al. 2006

Sci. Mar.

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SUMMARY: The influence of abiotic factors on the spatial distribution of the fiddler crabs Uca leptodactyla, U. maracoani, U. rapax and U. thayeri was studied in a tropical mangrove of northeast Brazil. Eight transects were delimited in a mangrove area of the Pacoti River. On each transect, three 0.25 m 2 squares were sampled during spring low tide periods from September 2003 to August 2004. The sediment of the squares at each transect was analysed for grain size, organic matter and humidity. Morphology of the second maxilliped was studied considering the number of spoon-tipped setae to help explain the ecological distribution of the species. U. leptodactyla and U. rapax were found living in medium sand, U. thayeri was collected in fine and very fine sand, while U. maracoani was found living in very fine sand. U. leptodactyla showed a negative correlation with organic matter and humidity while U. thayeri showed a positive correlations for both factors. U. maracoani and U. rapax were not correlated with organic matter or humidity. The analysis of the second maxilliped revealed that U. leptodactyla and U. rapax show a high quantity of spoon-tipped setae while U. maracoani and U. thayeri show a greater quantity of plumose setae. Las propiedades físicas del sedimento, i.e., textura, contenido orgánico y humedad también fueron evaluadas en cada cuadrante. La morfología del segundo maxilipedio se estudió considerado el número de setas con punta de cuchara para explicar la distribución ecológica de las especies. U. leptodactyla y U. rapax fueron encontrados en los sedimentos gruesos, mientras U. thayeri y U. maracoani fueron encontrados en los sedimentos lodosos. La abundancia de U. leptodactyla mostró una correlación negativa con el contenido orgánico y la humedad mientras U. thayeri mostró una correlación positiva con ambos factores. La abundancia de U. rapax y U. maracoani no estuvo correlacionada con la materia orgánica y humedad. El análisis del segundo maxilipedio reveló que U. leptodactyla y U. rapax presentan una cantidad alta de setas con punta de cuchara mientras U. maracoani y U. thayeri presentaron una cantidad mayor de setas plumosas. KeywordsPalabras clave: género Uca, distribución espacial, factores abióticos, análisis del segundo maxilipedio, manglar tropical, Nordeste de Brasil.

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“…Fiddler crabs, for example, have substantial impacts on BMA (Teal 1962). The reduction of BMA abundance in the late summer corresponds to the maximal seasonal abundance of fiddler crabs in similar environments (Mouton & Felder 1996). Some of the apparent seasonal variation in BMA biomass could be due to seasonal variation in the carbon:chl a ratio of BMA, as we used this ratio from the literature in our biomass estimates.…”

Section: Seasonal Trendsmentioning

confidence: 99%

Environmental factors shaping microbial community structure in salt marsh sediments

First

Hollibaugh²

2010

Mar. Ecol. Prog. Ser.

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We examined benthic microbial communities in 3 contrasting subtidal salt marsh sediments over the course of a year to investigate the relationship between environmental conditions and benthic microbial community structure. Samples were collected monthly from a high-energy sandy beach, a tidal creek bed, and a Spartina alterniflora marsh border. The concentrations and biomasses of benthic microalgae (BMA), total and potentially active bacteria (measured by an enzyme-activated fluorogenic compound), heterotrophic protists, and metazoan meiofauna were measured at each location. Sediment grain size and porewater pH explained most of the variability in biomass distributions; variations in benthic biomass did not correlate well with temperature. There was a seasonal shift from a BMA-dominated community in the spring and summer months to bacteria-dominated communities in autumn at all locations, when inactive bacteria were most abundant. When normalized to sediment porewater volume, benthic protists concentrations were not significantly related to sediment porosity. Benthic protist porewater concentrations (mean: 3.4 × 10 3 , range: 0.1 to 9.3 × 10 3 protists ml -1) were comparable to protist concentrations in the water column. In contrast, bacteria were several orders of magnitude more concentrated in the sediments (mean: 4.2 × 10 9 ; range: 0.6 to 16 × 10 9 bacteria ml -1 ) than the water column. Low abundances of protists relative to bacteria appear to contribute to long bacterial turnover times, especially in fine-grained sediments. We hypothesize that both grazing by meiofauna and low anaerobic growth efficiency lead to relatively low biomass of bacterivorous protists. KEY WORDS: Marine sediments · Salt marsh · Microzoobenthos · Protists · Bacteria · Biomass Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 399: [15][16][17][18][19][20][21][22][23][24][25][26] 2010 derived carbon appeared in meiofauna within 1 h of the addition of 13 C bicarbonate; bacteria incorporated the labeled carbon within several hours (Middelburg et al. 2000). These and other observations suggest that algal-derived carbon is channeled through 2 discrete pathways: (1) directly to herbivorous metazoan meiofauna, or (2) through bacteria to the microbial food web (van Oevelen et al. 2006). However, exchanges between these trophic pathways also occur. For example, diatoms were ingested by both protists and meiofauna (Epstein 1997a) and ingestion of bacteria by meiofauna and microinvertebrates has been observed (Kemp 1987). Additionally, the linkages between bacterivorous microbenthos and meiofauna (Epstein & Gallagher 1992, Hamels et al. 2001a) indicate that the 2 major routes of carbon flow in benthic environments, at least at times, intersect.The processes regulating the abundance and activity of bacteria in sediments are especially important as sediment bacteria play a significant role in benthic metabolism and geochemistry by transforming carbon, nitrogen, and sulfur compounds (revi...

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Burrow Distributions and Population Estimates for the Fiddler Crabs Uca spinicarpa and Uca longisignalis in a Gulf of Mexico Salt Marsh

Cited by 79 publications

References 18 publications

Proceedings of the Smithsonian Marine Science Symposium

Proceedings of the Smithsonian Marine Science Symposium

Spatial distribution of fiddler crabs (Genus <i>Uca</i>) in a tropical mangrove of northeast Brazil

Environmental factors shaping microbial community structure in salt marsh sediments

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