SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Costa,Leonardo Lopes; Machado,Phillipe Mota; Zalmon,Ilana Rosental.

ABSTRACT The role of morphodynamic features such as grain size, swash climate and wave action on the macrofauna of beaches are well-known. However, few studies have investigated natural disturbances as potential drivers of temporal community variations. In southeastern Brazil, we sampled the intertidal macrofauna of two sandy beaches to test whether seasonal disturbances as the frequency of storm wave events (SWE) and rainfall have significant influence on their composition and abundance. The macrofauna assemblage differed significantly between the rainy and the dry seasons, but rainfall was not the main driver of community changes, although both beaches are in the vicinity of extensive river plumes. Actually, SWE explained most macrofauna richness...

Comunidade de abelhas nativas (Apidae) em Floresta Ombrófila Densa Montana em Santa Catarina

Palavras-chave: Community structure; Benthic community; Intertidal; Morphodynamics; Seasonality.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100321

Mouga,Denise M.D.S.; Krug,Cristiane.

This study evaluated the bee community and their associated melliferous plants in the northern region of the state of Santa Catarina, Brazil in order to ascertain the diversity and floral interactions of the local Apidae. Twelve samplings were conducted (April 2006 to March 2007) in transects, where nets were used to capture bees directly from their flowers. Voucher specimens for both bees and plants were deposited at UNIVILLE. Diversity and equitability indexes were calculated. Our sampling effort resulted in a total of 934 bees in 72 genera and five families. Forty-four plant species belonging to 19 families were visited. A dominant family in Southern Brazil, Asteraceae, was visited most often (50% of the taxa). Nearly 20% of the plants were visited by...

Species richness and community composition of sphingid moths (Lepidoptera: Sphingidae) along an elevational gradient in southeast Peru

Palavras-chave: Apifauna; Conservation; Community structure.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000100011

Sublett,Clayton A.; Cook,Jerry L.; Janovec,John P..

ABSTRACT A clear low-elevation skewed unimodal richness pattern is presented for hawkmoths in Southeast Peru. Several hypotheses offer plausible explanations for such a distribution. The effects of water-energy dynamics are partially supported by a strong correlation between temperature and species richness at higher elevations. Further, hypotheses of plant diversity influences on hawkmoth ranges are supported by species richness peaking in transitional habitats. Sphingid subfamilies do not appear to be influenced by habitat type or elevational factors, such as temperature. This may make subfamily analysis a poor means of characterizing sphingid community composition unless study sites vary in the level of disturbance. This study documents 134 species in...

Explaining dissimilarities in macroinvertebrate assemblages among stream sites using environmental variables

Palavras-chave: Biodiversity; Community structure; Elevation; Neotropical region.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100325

Melo,Adriano S..

The relationship between community structure and environmental factors usually varies according to ecosystem type, group of organisms, and spatial scale. In this study I assessed whether dissimilarities among assemblages of stream macroinvertebrates are related to differences in environmental variables. Data consisted of macroinvertebrate samples of 10 stream sites during the dry season. Seven environmental variables were assessed. The relationship among dissimilarities in assemblage structure and dissimilarities in environmental variables was assessed using the BioEnv approach. Conductivity and measures related to stream size were the most important variables. However, part of the correlation with conductivity was due to the high value observed in a...

The coexistence of species La coexistencia de especies

Palavras-chave: Aquatic insects; BioEnv; Brazil; Community structure; Neotropical Region.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000100013

Disruption of ecosystem processes in western North America by invasive species

GORDON,CALEB E..

This paper is a critical literature review on the topic of the coexistence of similar species within ecological communities. A conceptual framework is provided for dividing coexistence studies and concepts into three distinct time scales. The first six sections deal primarily with ecological-scale, or mesoscale coexistence, defined as coexistence in the classic sense of the competitive exclusion principle and Lotka-Volterra models, wherein interacting populations have had enough time to reach equilibrium. The first four sections briefly review resource partitioning studies and competitive coexistence models, and discuss the relative contributions of, and interaction between empirical and theoretical approaches to the problem of ecological-scale...

Tipo: Journal article

Palavras-chave: Coexistence; Competition; Community structure; Resource partitioning; Niche.

Ano: 2000

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000100016

Dukes,Jeffrey S.; Mooney,Harold A..

Many ecosystems of western North America have been dramatically changed by non-native species. Here, we review ecological impacts of 56 plant, animal, fungus, and protist species that were brought to this region by humans. We discuss characteristics of invasive species that can lead to major ecosystem impacts, and explore how invasive species alter many different attributes of ecosystems. Specifically, we include examples of invasive species that affect geomorphology, fire regimes, hydrology, microclimate, atmospheric composition, nutrient cycling, and productivity. Finally, we review the direct consequences of biological invasions for some native species. We summarize examples from this paper in Appendix 1. Our examples illustrate how, as invasive species...

Tipo: Journal article

Palavras-chave: Biological invasions; Ecosystem functioning; Community structure; Exotic species; Impact.

Ano: 2004

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300003

Floristic changes in alpine plant communities induced by the cushion plant Azorella madreporica (Apiaceae) in the Andes of central Chile

QUIROZ,CONSTANZA L; BADANO,ERNESTO I; CAVIERES,LOHENGRIN A.

It is well known that the number of plant species associated with nurse plants increases with elevation. However, studies conducted so far have largely ignored the effect of nurse plants on other community attributes, such as the species abundances, diversity and evenness. Moreover, changes in these community attributes along environmental gradients have also been seldom examined. The present study evaluates the effect of the cushion plant Azorella madrepórica (Apiaceae) on species richness, species abundance, diversity and evenness of vascular plants at two elevations in the Andes of central Chile. Theoretically, the impact of this nurse cushion plant on these community attributes should be grater at a higher elevation. Results showed that the proportion...

Tipo: Journal article

Palavras-chave: Positive associations; Community structure; Elevation; Environmental gradients; Nurse effect.

Ano: 2009

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000200001

Diversity, dynamics and biogeography of Chilean benthic nearshore ecosystems: an overview and guidelines for conservation

Long-term monitoring of coastal ecosystems at Las Cruces, Chile: Defining baselines to build ecological literacy in a world of change

FERNANDEZ,MIRIAM; JARAMILLO,EDUARDO; MARQUET,PABLO A; MORENO,CARLOS A; NAVARRETE,SERGIO A; OJEDA,F. PATRICIO; VALDOVINOS,CLAUDIO R; VASQUEZ,JULIO A.

Despite Chile has been one of the pioneering countries in studies of human impact on marine communities, and despite the enormous economic and social significance that the marine environment has for the country, the development of marine conservation programs and the scientific basis for sustainability has not kept pace, with the exploitation rate of marine fisheries and the increasing use of the coast for other purposes. Although we think that the establishment of any conservation policies along the vast coastline of Chile must be based on a multitude of approaches and considerations, scientific, biological, and ecological principles should guide much of these efforts. In this paper, we attempt to present a general overview of the current knowledge about...

Tipo: Journal article

Palavras-chave: Chile; Marine conservation; Biogeographical patterns; Community structure; Human impact.

Ano: 2000

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400021

NAVARRETE,SERGIO A; GELCICH,STEFAN; CASTILLA,JUAN C.

Marine coastal habitats are being increasingly impacted by human activities. In addition, there are dramatic climatic disruptions that could generate important and irreversible shifts in coastal ecosystems. Long-term monitoring plays a fundamental and irreplaceable role to establish general baselines from which we can better address current and future impacts and distinguish between natural and anthropogenic changes and fluctuations. Here we highlight how over 25 years of monitoring the coastal marine ecosystem within the no-take marine protected area of Las Cruces has provided critical information to understand ecological baselines and build the necessary ecological literacy for marine management and conservation. We argue that this understanding can only...

Tipo: Journal article

Palavras-chave: Community structure; Conservation; Keystone species; Marine reserves; Policy.

Ano: 2010

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000100008

Composition and structure of aquatic insect assemblages of Yungas mountain cloud forest streams in NW Argentina

Rev. Soc. Entomol. Argent.

Von Ellenrieder,Natalia.

Thirty three lotic environments in the Yungas mountain cloud forest of NW Argentina were sampled both in undisturbed forest areas and sites altered by human activities. Aquatic insects of 143 taxa in 55 families were collected. Cluster analysis suggested altitude as one of the main structuring variables of aquatic insect communities in these streams, and its importance was confirmed by non-metric multidimensional scaling (NMS); the environmental parameters measured that were best correlated with the ordination were altitude, water temperature, latitude and channel variables (width, percentage of large and small woody debris, of undercut banks, cobble and coarse gravel). Multi response permutation procedures (MRPP) showed streams in well preserved areas to...

URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802007000200008

Palavras-chave: Diversity; Community structure; Indicator species; Biological metrics; Elmidae.

Ano: 2007

A preliminary study of aquatic Coleoptera in temporary ponds and the ecological variables influencing their richness and diversity

Rev. Soc. Entomol. Argent.

GÓMEZ LUTZ,María C.; KEHR,Arturo I..

Water beetles possess a wide variety of ecological attributes that allow them to occupy a wide range of aquatic habitats. Temporary ponds are environments that experience recurrent drought periods that may differ in duration; each pond is further characterized by a particular fauna, and by the size of the population that can be supported. The richness (S) and diversity (H') of water beetles collected in temporary ponds in Corrientes province were analyzed. Rarefaction was used to avoid estimation bias and to use comparative methodology. Pearson correlations were calculated using water temperature, depth, surface (m²), diversity (Shannon & Wiener) and richness. A total of 660 individuals, including 42 species, 22 genera and 7 families were recorded....

URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802017000200003

Palavras-chave: Aquatic beetles; Community structure; Hydroperiod; Temporary pond.

Ano: 2017

ชนิด การแพร่กระจายและโครงสร้างชุมชนของสัตว์หน้าดินขนาดใหญ่ที่อาศัยในเขตน้ำขึ้นน้ำลงบริเวณหาดหินของ อ.ปะทิว จ.ชุมพร

Thai Agricultural

Monthon Kaenmanee; Sujitra Samakraman; Nipavan Bussarawit; Sakanan Plathong.

Species composition, distribution and community structure of intertidal rocky shore macrobenthos in Pathiew, Chumporn were investigated quantitatively in August 2007 and February 2008. A total of 49 species of macrobenthos were identified with 1 species of sponge, 1 species of platyhelminth, 11 species of annelids, 15 species of molluscs and arthropods, 3 species of echinoderms, 1 species of bryozoan, and 2 species of chordates. A gastropod, Clypeomorus b. bifasciata, was the dominant taxon occurring with the high density at the mid and lower shore level whereas the densities of other macrobenthos species tended to increase with the distance from the supralittoral shoreline. Based on the results of SIMPER Analysis, two groups of communities were...

Tipo: Collection

Palavras-chave: Macrobenthos; Species composition; Distribution; Community structure; Intertidal rocky shore; Chumporn province; สัตว์หน้าดินขนาดใหญ่; ชนิด; การแพร่กระจาย; โครงสร้างชุมชน; เขตน้ำขึ้นน้ำลง; หาดหิน; จ.ชุมพร อ.ปะทิว.

Ano: 2010

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5227

ความหลากหลายของสัตว์ไม่มีกระดูกสันหลังในระบบนิเวศข้าวไร่ ที่อำภอบ้านแฮด จังหวัดขอนแก่น

Thai Agricultural

Patchai Souksai; Yupa Hanboonsong.

The research studies an arthropod community in upland rice ecosystem at farmers’ field in Ban Had District, Khon Kaen Province, Northeast Thailand, was conducted during May to October 2011. Samples were collected using light traps, yellow sticky traps, sweep nets and visual observation methods. A total of 7,195 individual arthropods from 160 species were recorded in this study. Among the sampling methods, 140 species were recorded using light trap, followed by 108, 58 and 30 species collected by using yellow sticky trap, sweep net and visual observation, respectively. The arthropod community of this studies constituted of four guilds as phytophagous, predator, parasitoid and scavenger. The predator (60.93 % of total individuals and 47.17% of total species)...

Tipo: PhysicalObject

Palavras-chave: Arthropods; Upland rice ecosystem; Community structure; Diversity; Rice growth; Pest control program; Ban Had district; Khon Kaen province; Northeast; สัตว์ไม่มีกระดูกสันหลัง; ระบบนิเวศข้าวไร่; โครงสร้างประชากร; อนุกรมวิธาน; ความหลากหลาย; จ.ขอนแก่น.

Ano: 2013

URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5794

Padrões de abundância, riqueza e diversidade de moluscos bivalves na plataforma continental ao largo de Ubatuba, São Paulo, Brasil: uma comparação metodológica

Soares-Gomes,Abílio; Pires-Vanin,Ana Maria Setubal.

The diversity and richness patterns of bivalve molluscs were studied on the continental shelf of Ubatuba (23º38'S, 45º14'W and 23º25'S, 44º51'W) between 15-120 metres depth. The samples were taken with a rectangular dredge and a beam trawl. The results showed higher values of richness, diversity and evenness for inner shelf (from coast to nearly 50 m depth) and greater values of abundance for outer shelf (from 50 to around 120 m depth). This pattern might be due to the higher instability of the inner shelf, which is influenced by the seasonal intrusion of the South Atlantic Central Water (SACW) and the occurrence of cold fronts. Sanders' rarefation curves, distribution and abundance curves and DIMO model were used and the results compared. The Qinghong's...

Levantamento da fauna entomológica no estado do Paraná III: Saturniidae (Lepidoptera)

Palavras-chave: Biodiversity; Community structure; Macrobenthos; Spatial distribution; Soft-bottom.

Ano: 2003

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000400027

Marinoni,Renato C.; Dutra,Renato R.C.; Casagrande,Mirna M..

In addition to the Survey of the Entomological Fauna in Paraná State, the family Saturniidae was studied in its ecological and faunistic aspects. The material was captured using one light trap installed in eight different sites of the State: Antonina, São José dos Pinhais, Colombo, Ponta Grossa, Telêmaco Borba, Jundiaí do Sul, Guarapuava and Fênix, from October 1986 to September 1987. The total number of specimens and means values of capture were analyzed. Indices of diversity and evenness were used to discuss richness and dominance of species in each locality. Besides using ecological indices, the data were also compared by Clustering Analysts, Principal Coordinate Analysis, Minimum Spanning Tree and Linear Correlation Coefficient. The results were...

Diversidade dos noctuídeos (Lepidoptera, Noctuidae) em Salvador do Sul, Rio Grande do Sul, Brasil

Palavras-chave: Saturniidae; Faunistic; Diversity; Community structure; Paraná.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000200016

Specht,Alexandre; Corseuil,Elio.

Diversity of owlet-moth (Lepidoptera, Noctuidae) in Salvador do Sul, Rio Grande do Sul, Brazil. The purpose of this paper is to describe the Noctuidae community in Salvador do Sul, Rio Grande do Sul. Light traps captured the insects of this research. The quantitative data were collected through weekly sampling, during one year (1994-1995); the qualitative data were collected through non-systematic sampling, during four consecutive years. The community characterization was based on the richness, abundance, specific constancy, diversity indices and abundance distribution; also total richness estimates were calculated, by nonparametric statistical procedures. In the systematized collecting there were captured 4017 noctuids of 108 species, distributed in 14...

Potencial atrator de peixes ósseos em recife artificial no litoral norte do estado do Rio de Janeiro, Brasil

Palavras-chave: Biodiversity; Community structure; Light trap; Species accurnulation.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500022

Gomes,Marcelo Paes; Novelli,Ronaldo; Faria,Vicente Vieira; Zalmon,Ilana Rosental.

Artificial reefs have become an important and popular resource enhancement technique by concentrating fishes and by increasing natural production of biological resources. In order to increase the necto-benthic colonization potencial, an artificial reef was installed on the northern coast of Rio de Janeiro (21º27'S, 41ºOO'W), an area with typically low relief bottom. Measuring nearly 1500 m², the reef consisted of four sets of different materials randomly disposed: concrete pipes (N = 12); tires structures (N = 20); and cement tanks (N = 7) and pre-made blocks (N = 4). ln order to determine the artificial reef effects on the teleost community, trammel nets were used for monthly sampling the reef site (RA) and on a control area (AC) with sandy bottom. During...

The benthic macroinvertebrate fauna of highland streams in southern Brazil: composition, diversity and structure

Palavras-chave: Artificial reef; Osteichthyes; Community structure; Temporal variation; Northern coast of Rio de Janeiro.

Ano: 2001

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000300014

Buckup,Ludwig; Bueno,Alessandra A. P.; Bond-Buckup,Georgina; Casagrande,Marcelo; Majolo,Fabiane.

Benthic macroinvertebrate in four rivers, three in the Pelotas River basin (Divisa, Marco and Silveira rivers, in the headwaters of the Uruguai River) and one in the Taquari-Antas system (Antas River), a tributary in the Guaíba basin, in the state of Rio Grande do Sul, were identified. Two samples were collected in summer, autumn and spring, with one replicate in each river. The total of 28,961 specimens included members of Platyhelminthes, Annelida, Acarina, Insecta, Crustacea and Mollusca. The Silveira and Marco rivers showed significant differences in the indices of Shannon-Weaver (H), Simpsons Reciprocal (1/D), Margalef (DMg) and Equitability (E). The Silveira River showed the highest means of diversity and the EPT index (Ephemeroptera, Plecoptera,...

Heterogeneidade estrutural e diversidade de pequenos mamíferos em um fragmento de mata secundária de Minas Gerais, Brasil

Palavras-chave: Aquatic invertebrates; Community structure; Diversity indices; Rio Grande do Sul.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200005

Paglia,Adriano Pereira; De Marco Júnior,Paulo; Costa,Fernando Martins; Pereira,Ronaldo Fernandes; Lessa,Gisele.

The aim is to determine the relationship between the diversity of small mammals and the structural heterogeneity and/or secondary successional stages in an Atlantic forest fragment at Viçosa (Minas Gerais). We used Sherman and hook live traps to sample this fauna, monthly from may 1992 to april 1993 in three areas: an abandoned plantation of Melinis minutiflora (campo) and two distinct forest areas (capoeira and mata). The structural heterogeneity was determined as a function of the presence of dead trees, pioneer species, epiphytes, the distances between trees, the tree height and basal area measured by a modified quadrant sample method (Cottam & Curtis 1945). lt was sampled a total of 340 individuals belonging to 17 species. The homogeneous...

Ecomorphometric structure of Restinga da Marambaia lizard community, Rio de Janeiro, southeastern Brazil

Palavras-chave: Community structure; Habitat heterogeneity; Small mammal diversity.

Ano: 1995

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100010

Carvalho,André L. G. de; Araújo,Alexandre F. B. de.

In restinga areas of Marambaia, Rio de Janeiro, we recorded nine species of lizards, grouped in four families. The morphometric analysis suggested an invasion-structured pattern, with two distinct groups of species in the community: the "ground-runners", composed of animals with robust bodies and long limbs, represented by Tropidurus torquatus (Wied, 1820), Ameiva ameiva (Linnaeus, 1758), Liolaemus lutzae Mertens, 1938, Cnemidophorus littoralis Rocha, Araujo, Vrcibradic & Costa, 2000 and Tupinambis merianae (Duméril & Bibron, 1839); and the "hiders", composed of small-bodied animals with short limbs, represented by Hemidactylus mabouia (Moreau de Jonnès, 1818), Gymnodactylus darwinii (Gray, 1845), Mabuya agilis (Raddi, 1823) and M....