The Tree Decline Recovery Seesaw; a conceptual model of the decline and recovery of drought stressed plantation trees

Whyte, G.; Howard, K.; Hardy, G.; Burgess, Treena I.

doi:10.1016/j.foreco.2016.03.041

Cited by 20 publications

(16 citation statements)

References 117 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Whyte et al . () briefly mentioned how two leaf chewers, one specialist and one generalist, showed different responses to drought. There have been many predictions made about how plant defences will affect generalists and specialists.…”

Section: The Relationship Between Plant Water Stress and Performance mentioning

confidence: 99%

“…Nitrogen content is linked to carbon content as some nitrogen-rich enzymes and precursors are involved in the synthesis of carbon-based defences. Figure adapted from Whyte et al (2016). early in a drought event, followed by a decrease if the drought is long and severe ( Fig.…”

Section: (C) How Does Drought Impact Plant Nutritional Quality?mentioning

confidence: 99%

“…4). Some insects, such as the Australian gumleaf skeletoniser Uraba lugens or the jarrah leaf miner Perthida glyphopa feed exclusively on senescent leaves, and may therefore prefer heavily stressed trees or dying plants, while other insects, such as the autumnal moth Epirrita autumnata or the paropsine beetle Chrysophtharta bimaculata, prefer new leaf growth, and may therefore thrive on trees recovering from drought (Whyte et al, 2016). Whyte et al (2016) also postulated that severely water-stressed trees could attract senescence-feeders while trees recovering from drought and producing new foliage could attract flush-feeders.…”

Section: The Relationship Between Plant Water Stress and Performmentioning

confidence: 99%

“…Some insects, such as the Australian gumleaf skeletoniser Uraba lugens or the jarrah leaf miner Perthida glyphopa feed exclusively on senescent leaves, and may therefore prefer heavily stressed trees or dying plants, while other insects, such as the autumnal moth Epirrita autumnata or the paropsine beetle Chrysophtharta bimaculata, prefer new leaf growth, and may therefore thrive on trees recovering from drought (Whyte et al, 2016). Whyte et al (2016) also postulated that severely water-stressed trees could attract senescence-feeders while trees recovering from drought and producing new foliage could attract flush-feeders. Several observations confirm this hypothesis: some chrysomelid beetles (Angel, Nichols & Stone, 2008;Whyte et al, 2016) are attracted to flush growth after water availability increases, but do not feed on older leaves, while some species of leaf chewers (Farr, Swain & Metcalf, 2004;Mayfield III, Allen & Briggs, 2007;Jacquet, Orazio & Jactel, 2012) and leaf miners (Roslin et al, 2006) feed specifically on severely stressed trees with senescent leaves.…”

Section: The Relationship Between Plant Water Stress and Performmentioning

confidence: 99%

“…Whyte et al (2016) also postulated that severely water-stressed trees could attract senescence-feeders while trees recovering from drought and producing new foliage could attract flush-feeders. Several observations confirm this hypothesis: some chrysomelid beetles (Angel, Nichols & Stone, 2008;Whyte et al, 2016) are attracted to flush growth after water availability increases, but do not feed on older leaves, while some species of leaf chewers (Farr, Swain & Metcalf, 2004;Mayfield III, Allen & Briggs, 2007;Jacquet, Orazio & Jactel, 2012) and leaf miners (Roslin et al, 2006) feed specifically on severely stressed trees with senescent leaves. (2) Including the concept of tree recovery Studies on the impact of water stress on herbivorous insects usually represent drought either as an absolute event (i.e.…”

Section: The Relationship Between Plant Water Stress and Performmentioning

confidence: 99%

See 4 more Smart Citations

How do herbivorous insects respond to drought stress in trees?

2019

View full text Add to dashboard Cite

Increased frequency and severity of drought, as a result of climate change, is expected to drive critical changes in plant–insect interactions that may elevate rates of tree mortality. The mechanisms that link water stress in plants to insect performance are not well understood. Here, we build on previous reviews and develop a framework that incorporates the severity and longevity of drought and captures the plant physiological adjustments that follow moderate and severe drought. Using this framework, we investigate in greater depth how insect performance responds to increasing drought severity for: (i) different feeding guilds; (ii) flush feeders and senescence feeders; (iii) specialist and generalist insect herbivores; and (iv) temperate versus tropical forest communities. We outline how intermittent and moderate drought can result in increases of carbon‐based and nitrogen‐based chemical defences, whereas long and severe drought events can result in decreases in plant secondary defence compounds. We predict that different herbivore feeding guilds will show different but predictable responses to drought events, with most feeding guilds being negatively affected by water stress, with the exception of wood borers and bark beetles during severe drought and sap‐sucking insects and leaf miners during moderate and intermittent drought. Time of feeding and host specificity are important considerations. Some insects, regardless of feeding guild, prefer to feed on younger tissues from leaf flush, whereas others are adapted to feed on senescing tissues of severely stressed trees. We argue that moderate water stress could benefit specialist insect herbivores, while generalists might prefer severe drought conditions. Current evidence suggests that insect outbreaks are shorter and more spatially restricted in tropical than in temperate forests. We suggest that future research on the impact of drought on insect communities should include (i) assessing how drought‐induced changes in various plant traits, such as secondary compound concentrations and leaf water potential, affect herbivores; (ii) food web implications for other insects and those that feed on them; and (iii) interactions between the effects on insects of increasing drought and other forms of environmental change including rising temperatures and CO2 levels. There is a need for larger, temperate and tropical forest‐scale drought experiments to look at herbivorous insect responses and their role in tree death.

show abstract

Section: The Relationship Between Plant Water Stress and Performance mentioning

confidence: 99%

Section: (C) How Does Drought Impact Plant Nutritional Quality?mentioning

confidence: 99%