The impact of land-use change on larval insect communities: Testing the role of habitat elements in conservation

Ngai, Jacqueline T.; Kirby, Kathryn R.; Gilbert, Benjamin; Starzomski, Brian M.; Pelletier, Aimée J. D.; Conner, Jason

doi:10.2980/15-2-3098

Cited by 14 publications

(15 citation statements)

References 62 publications

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“…There are well-documented changes in species composition along gradients of habitat openness within sites (Ngai et al 2008, Dézerald et al 2013, and our study similarly found a paucity of Tabanidae, Dolichopodidae (both Diptera), Hirudinea and Trichoptera in open habitats. This shift could have been realized in two ways, either as a turnover in species composition from Note: Values reported are the mode, which represent the most likely proportion of diet source.…”

Section: Discussionsupporting

confidence: 83%

Terrestrial support of aquatic food webs depends on light inputs: a geographically‐replicated test using tank bromeliads

Farjalla

González

Céréghino

et al. 2016

Ecology

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Food webs of freshwater ecosystems can be subsidized by allochthonous resources. However, it is still unknown which environmental factors regulate the relative consumption of allochthonous resources in relation to autochthonous resources. Here, we evaluated the importance of allochthonous resources (litterfall) for the aquatic food webs in Neotropical tank bromeliads, a naturally replicated aquatic microcosm. Aquatic invertebrates were sampled in more than 100 bromeliads within either open or shaded habitats and within five geographically distinct sites located in four different countries. Using stable isotope analyses, we determined that allochthonous sources comprised 74% (±17%) of the food resources of aquatic invertebrates. However, the allochthonous contribution to aquatic invertebrates strongly decreased from shaded to open habitats, as light incidence increased in the tanks. The density of detritus in the tanks had no impact on the importance of allochthonous sources to aquatic invertebrates. This overall pattern held for all invertebrates, irrespective of the taxonomic or functional group to which they belonged. We concluded that, over a broad geographic range, aquatic food webs of tank bromeliads are mostly allochthonous-based, but the relative importance of allochthonous subsidies decreases when light incidence favors autochthonous primary production. These results suggest that, for other freshwater systems, some of the between-study variation in the importance of allochthonous subsidies may similarly be driven by the relative availability of autochthonous resources.

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Section: Discussionsupporting

confidence: 83%

Terrestrial support of aquatic food webs depends on light inputs: a geographically‐replicated test using tank bromeliads

Farjalla

González

Céréghino

et al. 2016

Ecology

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“…Similarly, in southeastern Sweden (Jonason et al 2010), butterfly species richness (not the abundance) was found to be positively related to increasing tree cover in the farm landscape. Apart from land use and farm management methods or farming practices (Weibull and Östman 2003), vegetation structure, quality of the matrix surrounding an agricultural habitat (Binzenhöfer et al 2008;Summerville et al 2008), diversity and types of habitats (Dessuy and de Morris 2007;Ngai et al 2008;Kumar et al 2009), landscape heterogeneity and habitat connectivity (Davis et al 2007) are important factors determining occurrence, movements, population dynamics, seasonality, persistence and longterm survival of Lepidoptera faunal communities in the agricultural landscapes (Dennis 2003;Greza et al 2004;Chay-Hernández et al 2006;Kivinen et al 2008;Öckinger and Smith 2008;Pickens and Root 2008;Stasek et al 2008;Dover and Settele 2009;Brückmann et al 2010). Generally, agricultural matrices that are more resembling a nearby forest patch maintain higher butterfly diversity than matrices with lesser shade cover (Summerville et al 2001;Kitahara and Watanabe 2003;Weibull and Östman 2003;Boriani et al 2005;Aviron et al 2007;Ohwaki et al 2007Ohwaki et al , 2008Barlow et al 2008;Bergman et al 2008;van Halder et al 2008;Marín et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Drivers of species richness and abundance of butterflies in coffee–banana agroforests in Uganda

Munyuli

2012

International Journal of Biodiversity Science, Ecosystem Servic

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A study was conducted in 26 sites on agricultural landscapes in Central Uganda to collect baseline information about important drivers of butterfly richness and abundance. Data were collected for 1 year (2006) using line transects walk-and-counts, fruit-bait traps and handnets sampling methods. A total of 57,439 individuals belonging to 331 species were collected. Totals of 127, 131 and 299 species were recorded in transect counts, banana-bait and handnets, respectively. Of the 57,439 individuals registered, 75%, 19% and 6% were recorded in transect counts, handnet and banana-bait trap, respectively. Butterfly abundance and species richness were significantly (p < 0.05) affected by climatic factors (rainfall, temperature) in previous years (2004 and 2005) and richness and abundance of wild nectaring plants. Butterfly species richness (not the abundance) decreased with land-use intensity (p < 0.05) and was positively related to the cover of semi-natural habitats. Both butterfly species richness and abundance declined sharply with forest distance. Nearby forest remnants and high cover of semi-natural habitats are thus important for conservation of butterflies in coffee-banana agroforestry systems and farmers should be encouraged to protect such resources.

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“…Humans have a large trajectory of changing landscapes, being one of the most highlighted drivers of biodiversity loss (Ellis et al, 2010). Recent studies have shown the direct relation between the changes in the use of land and changes in bird (Rittenhouse et al, 2012; Dorresteijn et al, 2015), mammal (Sieber et al, 2015; Torre et al, 2015; Cisneros, Fagan & Willig, 2015), amphibian (Nori et al, 2015) and invertebrate communities (Ngai et al, 2008; Wagner, Krauss & Steffan-Dewenter, 2013). Therefore, when the dates of records in a biodiversity database coincide with, or precede, important changes in land use, neglecting obsolescence of the data could allow for a considerable amount of noise in the primary data used to estimate potential distribution areas or diversity patterns.…”

Section: Introductionmentioning

confidence: 99%

Biodiversity data obsolescence and land uses changes

Escribano

Ariño

Galicia

2016

PeerJ

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BackgroundPrimary biodiversity records (PBR) are essential in many areas of scientific research as they document the biodiversity through time and space. However, concerns about PBR quality and fitness-for-use have grown, especially as derived from taxonomical, geographical and sampling effort biases. Nonetheless, the temporal bias stemming from data ageing has received less attention. We examine the effect of changes in land use in the information currentness, and therefore data obsolescence, in biodiversity databases.MethodsWe created maps of land use changes for three periods (1956–1985, 1985–2000 and 2000–2012) at 5-kilometres resolution. For each cell we calculated the percentage of land use change within each period. We then overlaid distribution data about small mammals, and classified each data as ‘non-obsolete or ‘obsolete,’ depending on both the amount of land use changes in the cell, and whether changes occurred at or after the data sampling’s date.ResultsA total of 14,528 records out of the initial 59,677 turned out to be non-obsolete after taking into account the changes in the land uses in Navarra. These obsolete data existed in 115 of the 156 cells analysed. Furthermore, more than one half of the remaining cells holding non-obsolete records had not been visited at least for the last fifteen years.ConclusionLand use changes challenge the actual information obtainable from biodiversity datasets and therefore its potential uses. With the passage of time, one can expect a steady increase in the availability and use of biological records—but not without them becoming older and likely to be obsolete by land uses changes. Therefore, it becomes necessary to assess records’ obsolescence, as it may jeopardize the knowledge and perception of biodiversity patterns.

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The impact of land-use change on larval insect communities: Testing the role of habitat elements in conservation

Cited by 14 publications

References 62 publications

Terrestrial support of aquatic food webs depends on light inputs: a geographically‐replicated test using tank bromeliads

Terrestrial support of aquatic food webs depends on light inputs: a geographically‐replicated test using tank bromeliads

Drivers of species richness and abundance of butterflies in coffee–banana agroforests in Uganda

Biodiversity data obsolescence and land uses changes

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