Negative effects of forest fragmentation and proximity to edges on pollination and herbivory of Bomarea salsilla (Alstroemeriaceae)

Valdivia, Carlos E.

doi:10.5091/plecevo.2011.487

Cited by 5 publications

(16 citation statements)

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“…Negative edge effects on herbivory have also been recorded in other fragmented forests (e.g. Skoczylas et al 2007;Valdivia 2011) although positive responses to edge conditions have more frequently been recorded [see review by Wirth et al (2008)] and were observed here for leaf mining damage.…”

Section: Discussionmentioning

confidence: 76%

“…Such changes in insect herbivory rates could be related to altered resource availability or quality, since habitat fragmentation has been shown to affect plant density (Lienert and Fischer 2003;Valdivia 2011) and leaf traits (Silva and Simonetti 2009;Ishino et al 2012). Furthermore, changes in herbivore populations (Savilaakso et al 2009;Haynes and Crist 2009) or changes in the control of herbivore populations exerted by their natural enemies (Kruess and Tscharntke 1994;De La Vega et al 2012) may lead to altered insect herbivory in fragmented habitats.…”

Section: Introductionmentioning

confidence: 97%

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Not all in the same boat: trends and mechanisms in herbivory responses to forest fragmentation differ among insect guilds

Rossetti

González

Salvo

et al. 2014

Arthropod-Plant Interactions

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Habitat fragmentation can alter fundamental ecological interactions such as insect herbivory. Few studies of habitat fragmentation effects on herbivory have examined the mechanisms involved, and differences among insect guilds have been largely ignored. Here, we studied area and edge effects on herbivory by three guilds of phytophagous insects in a fragmented Chaco Serrano forest. We estimated herbivory levels on native Croton lachnostachyus plants and assessed plant availability (distance to nearest conspecific) and quality indicators (leaf water, carbon and nitrogen content), as well as richness and abundance of the associated insect community, in order to explore mechanisms underlying herbivory changes. Herbivory by chewing and sap-sucking insects decreased, and herbivory by leaf miners increased in plants growing at the forest edge, compared with those at the interior. Forest area effects were detected only in interaction with edge effects on chewing, leaf mining and total herbivory. Lower herbivory at the edge appeared to be mediated by changes in leaf water and nitrogen content for sap-sucking herbivory, and linked to strong direct effects for chewing damage and total herbivory. Instead, higher damage levels by leaf miners at the forest edge seemed to be driven by increased plant availability and lower water content. Further studies are needed to unravel the factors involved in the strong direct effects detected here for all herbivory types. These results emphasize the necessity to consider differential responses from diverse phytophagous insect guilds, and factors operating at multiple levels, in order to disentangle, and ultimately understand, forest fragmentation effects on herbivory.

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Section: Discussionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 97%

Not all in the same boat: trends and mechanisms in herbivory responses to forest fragmentation differ among insect guilds

Rossetti

González

Salvo

et al. 2014

Arthropod-Plant Interactions

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“…Valdivia et al . , ), leaving degraded and transformed habitats far less studied (but see Murúa et al . ).…”

Section: A Review Of the Evidencementioning

confidence: 99%

Pollination in the Chilean Mediterranean‐type ecosystem: a review of current advances and pending tasks

2017

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We conducted a systematic review of the scientific literature published on plant-pollinator interactions, from both the plant and pollinator perspective, in the Chilean Mediterranean-type ecosystem (MTE hereafter). Our search identified 69 published papers on 235 native plant species from 62 families. Less than 7.9% of the flowering species inhabiting the Chilean Mediterranean have been studied, and most studies were restricted to only one locality and one reproductive season. The geographic location of the studies differed from a random pattern, showing two well-defined areas where most studies were conducted. Likewise, most studies in the Andes Range were performed above 2000 m a.s.l. The number of species of flower visitor per plant species was low (4.25 ± 0.22), which probably results from the historical and biogeographic isolation of Chile. This literature survey shows that studies relating floral traits with pollinator attraction and plant reproduction are the most frequent topics of research, reaching 37.6% of studies, followed by studies that examine pollination in relation to human impact (16.1%), micro- and macroevolution (14.0%), relationships between pollination and other ecological interactions (10.8%), community and network assessments (11.8%), and effects of abiotic variables on pollination interactions (9.7%). Our review highlights a lack of research on the effects of pollination for anthropogenic land use especially as agricultural practice is one of the most salient features of the Chilean MTE. Future directions to increase our understanding of the role of plant-pollinator relationships for biodiversity maintenance should include: to extend the taxonomic and geographic scope of research, to increase the number of spatial and temporal replicates, to increase the number of studies on pollination networks as they provide estimates of community complexity and putative stability, to develop studies that estimate the importance of pollination for plant demographic parameters and conservation, and to conduct studies that estimate the ecological service provided by Chilean native pollinators for crop yield and sustainable agriculture.

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“…However, there is an additional issue that should be taken into account when dealing with fragmented habitats, the role of multiple plant-animal interactions acting simultaneously. Most studies have documented how a single plantanimal interaction is modified by habitat fragmentation, but studies addressing two or more interactions simultaneously are scarce in the literature [e.g., [60]]. We could expect an increase in plant fitness when a mutualism increases or an antagonism decreases and vice versa.…”

Section: Complex Relationships: a Multi-interaction Viewmentioning

confidence: 98%

“…We could expect an increase in plant fitness when a mutualism increases or an antagonism decreases and vice versa. However, a recent study [60] has demonstrated that the decrease of an antagonist interaction (herbivory) does not compensate the decrease of a mutualistic interaction (pollination), showing that the individual effects of ecological interactions are not additive in many cases [61].…”

Section: Complex Relationships: a Multi-interaction Viewmentioning

confidence: 99%

Microevolutionary Effects of Habitat Fragmentation on Plant-Animal Interactions

Fontúrbel

Murúa

2014

Advances in Ecology

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Plant-animal interactions are a key component for biodiversity maintenance, but they are currently threatened by human activities. Habitat fragmentation might alter ecological interactions due to demographic changes, spatial discontinuities, and edge effects. Also, there are less evident effects of habitat fragmentation that potentially alter selective forces and compromise the fitness of the interacting species. Changes in the mutualistic and antagonistic interactions in fragmented habitats could significantly influence the plant reproductive output and the fauna assemblage associated with. Fragmented habitats may trigger contemporary evolution processes and open new evolutionary opportunities. Interacting parties with a diffuse and asymmetric relationship are less susceptible to local extinction but more prone to evolve towards new interactions or autonomy. However, highly specialized mutualisms are likely to disappear. On the other hand, ecological interactions may mutually modulate their response in fragmented habitats, especially when antagonistic interactions disrupt mutualistic ones. Ecoevolutionary issues of habitat fragmentation have been little explored, but the empiric evidence available suggests that the complex modification of ecological interactions in fragmented habitats might lead to nonanalogous communities on the long term.

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Negative effects of forest fragmentation and proximity to edges on pollination and herbivory of Bomarea salsilla (Alstroemeriaceae)

Cited by 5 publications

References 0 publications

Not all in the same boat: trends and mechanisms in herbivory responses to forest fragmentation differ among insect guilds

Not all in the same boat: trends and mechanisms in herbivory responses to forest fragmentation differ among insect guilds

Pollination in the Chilean Mediterranean‐type ecosystem: a review of current advances and pending tasks

Microevolutionary Effects of Habitat Fragmentation on Plant-Animal Interactions

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