Rapid primary productivity changes in one of the last coastal rainforests: the case of Kahua, Solomon Islands

Garonna, Irene; Fazey, Ioan; Brown, M. E.; Pettorelli, Nathalie

doi:10.1017/s0376892909990208

Cited by 26 publications

(23 citation statements)

References 36 publications

(76 reference statements)

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“…Saleska et al (2007) demonstrated that reduced rainfall resulted in satellite-based primary productivity estimates that are higher than observed values during the wet season in a South American wet tropical region. Garonna et al (2009) highlighted the same pattern: with clouds being more likely to bias NDVI estimates in wet months than in dry months, and with more light reaching the canopy during the dry season, higher NDVI values were reported during the dry season in the Solomon Islands.…”

mentioning

confidence: 75%

The Normalized Difference Vegetation Index (NDVI): unforeseen successes in animal ecology

Pettorelli¹,

Ryan²,

Mueller³

et al. 2011

Clim. Res.

638

508

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This review highlights the latest developments associated with the use of the Normalized Difference Vegetation Index (NDVI) in ecology. Over the last decade, the NDVI has proven extremely useful in predicting herbivore and non-herbivore distribution, abundance and life history traits in space and time. Due to the continuous nature of NDVI since mid-1981, the relative importance of different temporal and spatial lags on population performance can be assessed, widening our understanding of population dynamics. Previously thought to be most useful in temperate environments, the utility of this satellite-derived index has been demonstrated even in sparsely vegetated areas. Climate models can be used to reconstruct historical patterns in vegetation dynamics in addition to anticipating the effects of future environmental change on biodiversity. NDVI has thus been established as a crucial tool for assessing past and future population and biodiversity consequences of change in climate, vegetation phenology and primary productivity.

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mentioning

confidence: 75%

The Normalized Difference Vegetation Index (NDVI): unforeseen successes in animal ecology

Pettorelli¹,

Ryan²,

Mueller³

et al. 2011

Clim. Res.

638

508

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“…The Kahua region is one of the only areas on the island not to have any commercial logging licenses (past or present; Pauku 2009), and because logging companies are interested mainly in flat, lowland areas, the steep terrain of the Kahua region could be considered a relatively safe sanctuary for biodiversity. However, decreases in primary productivity have been detected in Kahua, suggesting environmental change at a landscape scale (Garonna et al 2009). One of the most noticeable changes within the Kahua region is the proliferation of cacao plantations (Davies et al 2015).…”

Section: Study Areamentioning

confidence: 99%

Ultrasonic monitoring to assess the impacts of forest conversion on Solomon Island bats

Davies

Růžička

Lavery

et al. 2016

Remote Sens Ecol Conserv

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Paleotropical islands are experiencing extensive land-use change, yet little is known about how such changes are impacting wildlife in these biodiversity hotspots. To address this knowledge gap, we characterized bat responses to forest conversion in a biodiverse, human-threatened coastal rainforest habitat on Makira, Solomon Islands. We analysed~200 h of acoustic recordings from echolocating bats in the four dominant types of land use on Makira: intact forest, secondary forest, food gardens and cacao plantations. Bat calls were identified to the species level using a supervised classification model (where labelled data are used to train the system). We examined relative activity levels and morphological traits across habitats. Relative activity levels were highest in intermediately disturbed habitats and lowest in the most heavily disturbed habitat, although these differences were not significant. There were significant differences in the mean forearm length of bat assemblages across habitats, with the highest mean forearm length found in the most open habitat (Cacao). Overall, our study constitutes the first detailed exploration of anthropogenic effects on mammalian diversity in the Solomon Islands and includes the first acoustic and morphological information for many bat species in Melanesia. We use our experience to discuss the challenges of acoustic monitoring in such a remote and poorly studied region.

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“…1). Raw NDVI data were then smoothed (Garonna et al, 2009), and average values were obtained for each population and season.…”

Section: Primary Productivitymentioning

confidence: 99%

Testing Cort-Fitness and Cort-Adaptation hypotheses in a habitat suitability gradient for roe deer

Escribano-Ávila¹,

Pettorelli²,

Virgós³

et al. 2013

Acta Oecologica

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Rapid primary productivity changes in one of the last coastal rainforests: the case of Kahua, Solomon Islands

Cited by 26 publications

References 36 publications

The Normalized Difference Vegetation Index (NDVI): unforeseen successes in animal ecology

The Normalized Difference Vegetation Index (NDVI): unforeseen successes in animal ecology

Ultrasonic monitoring to assess the impacts of forest conversion on Solomon Island bats

Testing Cort-Fitness and Cort-Adaptation hypotheses in a habitat suitability gradient for roe deer

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