Diversity of Arboreal Spiders in Primary and Disturbed Tropical Forests

Floren, Andreas; Deeleman-Reinhold, Christa

doi:10.1636/05-22.1

Cited by 42 publications

(32 citation statements)

References 19 publications

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“…To date, there are several studies in tropical and temperate zones that have evaluated how human disturbances, in various forms and with different intensities is affecting the arthropod communities associated with the canopy (Hill et al 1995;Ozanne et al 1997Ozanne et al , 2000Linsenmair 2001, 2003;Tovar-Sánchez et al 2003;Floren and Deeleman-Reinhold 2005;Forkner et al 2006;Müller and Goβner 2007). However, these studies have shown inconsistent results, reporting that a disturbance can have a negative, positive, or no effect on the structure of arthropod communities.…”

Section: Disturbancesmentioning

confidence: 99%

Oak canopy arthropod communities: which factors shape its structure?

Valencia-Cuevas

Tovar-Sánchez

2015

Rev. Chil. de Hist. Nat.

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Canopy of forest ecosystems has been recognized as a habitat that supports a wide variety of plants, vertebrates, invertebrates, and microbes. Within the invertebrate group, arthropods are characterized by their great abundance, diversity, and functional importance. Particularly in temperate forests, species of the genus Quercus (oaks) are one of the most important tree canopy groups, for its diversity and dominance. Different studies have shown that the oak canopy contains a high diversity of arthropods suggesting their importance as habitat for this group of organisms. In this review, we investigated the factors that determine the establishment, organization, and maintenance of arthropod communities in the oak canopy. In general, it was found that there is a lack of literature that addresses the study of oak canopy arthropod communities. Also, the following patterns were found: (a) the research has covered a wide variety of topics; however, there are differences in the depth to which each topic has been analyzed, (b) there are ambiguous criteria to define the structure of the canopy, (c) groups with different habitat preferences belonging to different guilds and uneven development stages have been studied, avoiding generalizations about patterns found, (d) the standardization in sampling techniques and collection has been difficult, (e) bias exists towards the study of phytophagous insects belonging to the Coleoptera, Hymenoptera, and Lepidoptera orders, and (f) there are few studies in other groups of arthropods, for example, acorn borers, whose activity has an impact on the fitness and dispersion of the host plants. Finally, we propose that the detection and study of patterns in oak canopy communities can be of great value to propose management and conservation strategies in these forests.

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Section: Disturbancesmentioning

confidence: 99%

Oak canopy arthropod communities: which factors shape its structure?

Valencia-Cuevas

Tovar-Sánchez

2015

Rev. Chil. de Hist. Nat.

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“…Here, 18 trees of Mallotus (Euphorbiaceae) and 15 Vitex pinnata trees (Verbenaceae) were fogged. All spiders were sorted to family and identified as morphospecies and where possible to species and analysed ecologically (Floren and Deeleman-Reinhold 2005). At the moment of writing, 749 morphospecies have been recognised and documented, partly described and named, most still unidentified or unidentifiable.…”

Section: Methodsmentioning

confidence: 99%

Depreissia decipiens, an enigmatic canopy spider from Borneo revisited (Araneae, Salticidae), with remarks on the distribution and diversity of canopy spiders in Sabah, Borneo

Deeleman-Reinhold¹,

Miller²,

Floren³

2016

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Depreissia is a little known genus comprising two hymenopteran-mimicking species, one found in Central Africa and one in the north of Borneo. The male of Depreissia decipiens is redescribed, the female is described for the first time. The carapace is elongated, dorsally flattened and rhombus-shaped, the rear of the thorax laterally depressed and transformed, with a pair of deep pits; the pedicel is almost as long as the abdomen. The male palp is unusual, characterized by the transverse deeply split membranous tegulum separating a ventral part which bears a sclerotized tegular apophysis and a large dagger-like retrodirected median apophysis. The female epigyne consists of one pair of large adjacent spermathecae and very long copulatory ducts arising posteriorly and rising laterally alongside the spermathecae continuing in several vertical and horizontal coils over the anterior surface. Relationships within the Salticidae are discussed and an affinity with the Cocalodinae is suggested. Arguments are provided for a hypothesis that Depreissia decipiens is not ant-mimicking as was previously believed, but is a mimic of polistinine wasps. The species was found in the canopy in the Kinabalu area only, in primary and old secondary rainforest at 200–700 m.a.s.l. Overlap of canopy-dwelling spider species with those in the understorey are discussed and examples of species richness and endemism in the canopy are highlighted. Canopy fogging is a very efficient method of collecting for most arthropods. The canopy fauna adds an extra dimension to the known biodiversity of the tropical rainforest. In southeast Asia, canopy research has been neglected, inhibiting evaluation of comparative results of this canopy project with that from other regions. More use of fogging as a collecting method would greatly improve insight into the actual species richness and species distribution in general.

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“…Beberapa penelitian tentang keanekaragaman labalaba telah dilakukan, diantaranya keanekaragaman laba-laba pada berbagai habitat di Taiwan (Chen & Tso 2004), keanekaragaman laba-laba dan hubungannya dengan heterogenitas habitat (Abdelmoniem et al 2003;Cabili & Nuneza 2014;Vedel et al 2103), keanekaragaman laba-laba pada hutan primer dan hutan terganggu di daerah tropis (Floren & Reinhold 2005). Komposisi dan keanekaragaman laba-laba pada lima tipe vegetasi (Uniyal & Hore 2008), komposisi dan keanekaragaman laba-laba pada kanopi pohon (Sorensen 2004).…”

Section: Pendahuluanunclassified

Struktur komunitas laba-laba (Arachnida: Araneae) di Taman Nasional Bogani Nani Wartabone, Sulawesi Utara

Koneri

Saroyo

2015

J Entomol Indones

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ABSTRAKTaman Nasional Bogani Nani Wartabone merupakan salah satu kawasan hutan tropis dataran rendah. Kawasan ini memiliki keanekaragaman artropoda yang tinggi dan salah satunya adalah labalaba. Penelitian ini bertujuan untuk mengkaji struktur dan komunitas laba-laba pada berbagai tipe habitat di Kawasan Taman Nasional Bogani Nani Wartabone, Sulawesi Utara. Pengambilan sampel dilakukan pada tiga tipe habitat, yaitu hutan primer, hutan sekunder, dan perkebunan. Penelitian dilaksanakan dari bulan Maret hingga Mei 2014 dengan menggunakan perangkap sumuran (pitfall trap) untuk laba-laba yang bergerak di permukaan tanah dan jaring ayun (sweep net) untuk laba-laba di atas kanopi vegetasi. Jumlah laba-laba yang diperoleh selama penelitian sebanyak 15 famili yang terdiri atas 71 genus, 129 morfospesies dan 1267 individu. Famili yang banyak ditemukan jumlah individunya adalah Tetragnathidae, sedangkan yang paling sedikit, yaitu Ctenizidae. Salticidae merupakan famili yang paling banyak ditemukan spesiesnya (30 spesies), sedangkan yang paling sedikit Agelenidae, Ctenidae, dan Ctenizidae dengan masing-masing satu spesies. Kelimpahan, kekayaan, keanekaragaman, dan kemerataan spesies tertinggi terdapat di kebun, sedangkan yang terendah di hutan sekunder. Indeks kesamaan komunitas laba-laba terbesar terdapat antara hutan primer dan hutan sekunder. Hasil penelitian ini diharapkan dapat dijadikan sebagai data dasar dan bahan informasi dalam menyusun strategi konservasi laba-laba di Sulawesi Utara. Kata kunci: keanekaragaman, kekayaan, kelimpahan, laba-laba ABSTRACTBogani Nani Wartabone National Park is a tropical low land rain forest. This region has high diversity of arthropods, i.e. spider. The aims of this study was to analyze the Community structure of spiders of spiders (Arachnida: Araneae) in various types of habitat at Bogani Nani Wartabone National Park North Sulawesi. Sampling was carried out at three habitat types, namely primary, secondary, and farm. The research was conducted from March to May 2014 by using pitfall trap (to collect spiders that move on the ground) and sweep net (to collect the spideron vegetation canopy). The number of spiders obtained during the study of was 1267 speciments. The specimens collected are consists 15 families, 71 genera, and 129 morphospecies. The Family which most individual abundance is family Tetragnathidae and the least was Ctenizidae. Salticidae were the most common family of species (30 species), while the least were Agelenidae, Ctenidae and Ctenizidae where each family has one species. Abundance, richness, diversity and evenness of species was higher in the farm, while the lowest in the secondary forest. The highest similarity index of spider communities was between primary forests and secondary forests. The results of this research can be used as a diversity database of spiders for conservation strategies in North Sulawesi.

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Diversity of Arboreal Spiders in Primary and Disturbed Tropical Forests

Cited by 42 publications

References 19 publications

Oak canopy arthropod communities: which factors shape its structure?

Oak canopy arthropod communities: which factors shape its structure?

Depreissia decipiens, an enigmatic canopy spider from Borneo revisited (Araneae, Salticidae), with remarks on the distribution and diversity of canopy spiders in Sabah, Borneo

Struktur komunitas laba-laba (Arachnida: Araneae) di Taman Nasional Bogani Nani Wartabone, Sulawesi Utara

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