Stable isotope analyses of web-spinning spider assemblages along a headwater stream in Puerto Rico.


:Web-spinning spiders that inhabit stream channels are considered specialists of aquatic ecosystems and are major consumers of emerging aquatic insects, while other spider taxa are more commonly found in riparian forests and as a result may consume more terrestrial insects. To determine if there was a difference in spider taxa abundance between riverine web-spinning spider assemblages within the stream channel and the assemblages 10 m into the riparian forest, we compared abundances for all web-spinning spiders along a headwater stream in El Yunque National Forest in northeast Puerto Rico. By using a nonmetric dimensional scaling (NMDS) abundance analysis we were able to see a clear separation of the two spider assemblages. The second objective of the study was to determine if aquatic insects contributed more to the diet of the spider assemblages closest to the stream channel and therefore stable isotope analyses of δ (15)N and δ (13)C for web-spinning spiders along with their possible prey were utilized. The results of the Bayesian mixing model (SIAR) however showed little difference in the diets of riverine (0 m), riparian (10 m) and upland (25 m) spiders. We found that aquatic insects made up ∼50% of the diet for web-spinning spiders collected at 0 m, 10 m, and 25 m from the stream. This study highlights the importance of aquatic insects as a food source for web-spinning spiders despite the taxonomic differences in assemblages at different distances from the stream.






Kelly SP,Cuevas E,Ramírez A




Has Abstract


2015-10-15 00:00:00












  • The first tetrapod from the mid-Miocene Clarkia lagerstätte (Idaho, USA).

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    pub_type: 杂志文章


    authors: Calede JJM,Orcutt JD,Kehl WA,Richards BD

    更新日期:2018-06-08 00:00:00

  • Mechanisms of action and in vivo antibacterial efficacy assessment of five novel hybrid peptides derived from Indolicidin and Ranalexin against Streptococcus pneumoniae.

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    authors: Cheng J,Zhang N,Sha Z

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    authors: Pereira BP,Vieira M,Pousão-Ferreira P,Candeias-Mendes A,Barata M,Fonseca PJ,Amorim MCP

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  • Analysis of the spike, ORF3, and nucleocapsid genes of porcine epidemic diarrhea virus circulating on Thai swine farms, 2011-2016.

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    authors: Tuanthap S,Vongpunsawad S,Phupolphan C,Duang-In A,Wattanaphansak S,Assavacheep P,Theamboonlers A,Luengyosluechakul S,Amonsin A,Poovorawan Y

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  • Fuel-cell breathalyser use for field research on alcohol intoxication: an independent psychometric evaluation.

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    authors: Laasmaa M,Karro N,Birkedal R,Vendelin M

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    authors: Legendre LJ,Botha-Brink J

    更新日期:2018-07-11 00:00:00

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    pub_type: 杂志文章


    authors: Reisch C,Meier S,Schmid C,Bartelheimer M

    更新日期:2020-06-03 00:00:00

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    pub_type: 杂志文章


    authors: Meier A,de Laat M,Pollitt C,Walsh D,McGree J,Reiche DB,von Salis-Soglio M,Wells-Smith L,Mengeler U,Mesa Salas D,Droegemueller S,Sillence MN

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    更新日期:2018-03-01 00:00:00

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    authors: Dambrun M

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    pub_type: 杂志文章


    authors: Kimotho RN,Baillo EH,Zhang Z

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    authors: Schoenemann KL,Bonier F

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    authors: Mierzejewski P,Zakrzewska A,Kuczyńska J,Wyszogrodzka E,Dominiak M

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    pub_type: 杂志文章


    authors: Srivastava P,Choudhury A,Talwar M,Mohanty S,Narad P,Sengupta A

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    pub_type: 杂志文章


    authors: Carbajo AE,Cardo MV,Guimarey PC,Lizuain AA,Buyayisqui MP,Varela T,Utgés ME,Giovacchini CM,Santini MS

    更新日期:2018-07-17 00:00:00

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    pub_type: 杂志文章


    authors: Hasanpourghadi M,Abdul Majid N,Rais Mustafa M

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    pub_type: 杂志文章


    authors: Elbrecht V,Braukmann TWA,Ivanova NV,Prosser SWJ,Hajibabaei M,Wright M,Zakharov EV,Hebert PDN,Steinke D

    更新日期:2019-10-07 00:00:00

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    pub_type: 杂志文章


    authors: Jeong R,Tchesunov AV,Lee W

    更新日期:2019-11-18 00:00:00

  • North Atlantic Oscillation drives the annual occurrence of an isolated, peripheral population of the brown seaweed Fucus guiryi in the Western Mediterranean Sea.

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    pub_type: 杂志文章


    authors: Melero-Jiménez IJ,Salvo AE,Báez JC,Bañares-España E,Reul A,Flores-Moya A

    更新日期:2017-11-14 00:00:00

  • Analysis of pedestrian activity before and during COVID-19 lockdown, using webcam time-lapse from Cracow and machine learning.

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    pub_type: 杂志文章


    authors: Szczepanek R

    更新日期:2020-10-05 00:00:00

  • Student evaluations of teaching: teaching quantitative courses can be hazardous to one's career.

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    pub_type: 杂志文章


    authors: Uttl B,Smibert D

    更新日期:2017-05-09 00:00:00

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    pub_type: 杂志文章,已发布勘误


    authors: van Heteren AH,van Dierendonck RCH,van Egmond MANE,Ten Hagen SL,Kreuning J

    更新日期:2017-12-20 00:00:00

  • Temporal and spatial strategies in an active place avoidance task on Carousel: a study of effects of stability of arena rotation speed in rats.

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    pub_type: 杂志文章


    authors: Bahník Š,Stuchlík A

    更新日期:2015-09-22 00:00:00