Effects of microhabitat on rodent-mediated seed dispersal in monocultures with thinning treatment

Wang, Jing; Yan, Qiaoling; Lu, Deliang; Diao, Mengmeng; Yan, Tao; Sun, Yuhan; Yu, Liang; Zhu, Jiaojun

doi:10.1016/j.agrformet.2019.05.017

Cited by 16 publications

(12 citation statements)

References 78 publications

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“…High SDE would amplify the pressures an animal exerts on fruit traits, while low SDE would cancel it out. SDE is the culmination of multiple factors such as the number of seeds dispersed (Estrada & Coates‐Estrada, 1984; Valenta & Fedigan, 2008), effects of mouth and gut treatment on germination (Samuels & Levey, 2005; Traveset, 1998; Valenta & Fedigan, 2009), seed dispersal distances from parent trees (Hyatt et al, 2003; Levey, Tewksbury, & Bolker, 2008; McConkey & Chivers, 2007; Stevenson, 2000), fruiting conspecifics (Harms, Wright, Calderón, Hernández, & Herre, 2000; Valenta & Fedigan, 2010) and microhabitat variables at seed deposition sites (Augspurger, 1984; Balcomb & Chapman, 2003; Razafindratsima & Dunham, 2015; Wang et al, 2019).…”

Section: Evidence For Frugivore–fruit Coevolutionmentioning

confidence: 99%

The dispersal syndrome hypothesis: How animals shaped fruit traits, and how they did not

Valenta

Nevo

2020

Functional Ecology

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1. Fleshy fruits have evolved multiple times and display a tremendous diversity of colours, shapes, aromas and textures. For over a century this was attributed, at least in part, to frugivore-driven selection. The dispersal syndrome hypothesis posits that fruits and frugivores co-evolved, each exerting sufficient selective pressure on one another, and resulting to in suites of fruit traits that match frugivore behaviour, morphology and sensory capacities.2. In the last two decades of the past century, the dispersal syndrome hypothesis has been deemed overly adaptationist. Challenges are based on a variety of arguments, primarily that previous studies did not sufficiently incorporate a phylogenetic framework, and that non-adaptive factors can explain a great deal of extant fruit trait variation.3. In recent years, many studies have addressed these issues and found support for the dispersal syndrome hypothesis. As empirical evidence mounts, it's become increasingly clear that many fruit traits-primarily size, colour and scent-are strongly affected by frugivore trait preference. 4. At the same time, many studies do not sufficiently consider the many confounding factors involved in fruit trait evolution. 5. We review the evidence supporting the dispersal syndrome hypothesis and highlight the existing gaps in knowledge and the factors that are currently still not fully incorporated into the study of the evolution of fruit traits. K E Y W O R D S dispersal syndrome hypothesis, frugivory, fruit syndrome hypothesis, mutualism, plant-animal co-evolution, seed dispersal | 1159 Functional Ecology VALENTA ANd NEVO S U PP O RTI N G I N FO R M ATI O N Additional supporting information may be found online in the Supporting Information section.

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Section: Evidence For Frugivore–fruit Coevolutionmentioning

confidence: 99%

The dispersal syndrome hypothesis: How animals shaped fruit traits, and how they did not

Valenta

Nevo

2020

Functional Ecology

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“…This behavior also increases the chances of seeds reaching a suitable germination habitat and facilitates their distribution (Steele et al, 2015;Wang & Corlett, 2017). The pattern and intensity of seed removal depends on a multitude of biotic and abiotic factors, such as seed traits and availability (Dylewski et al, 2020;Xiao, Zhang & Krebs, 2015), rodent abundance (Li & Zhang, 2007) and habitat characteristics (Wang et al, 2019b;Perea et al, 2012). A seed's microhabitat is one of the most important factors affecting its removal (García-Castaño, Kollmann & Jordano, 2006;Steele et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of microhabitat on rodent-mediated seed removal of endangered Kmeria septentrionalis in the karst habitat

Wang

Pan

Qin

et al. 2020

PeerJ

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Seed removal behaviors of rodents are largely influenced by microhabitat. Although the karst ecosystem is composed of a broad variety of microhabitats, we have no information on how they affect such behaviors. We investigated rodents’ seed removal behaviors in four karst microhabitats (stone cavern, stone groove, stone surface, and soil surface) using three types of Kmeria septentrionalis seeds: fresh, black (intact seeds with black aril that dehydrates and darkens), and exposed (clean seeds without the aril). We show that Rattus norvegicus, Leopoldamys edwardsi and Rattus flavipectus were the predominant seed predators. Even though all seed types experienced a high removal rate in all four microhabitats, but rodents preferentially removed seeds from the three stone microhabitats (stone caves: 69.71 ± 2.74%; stone surface: 60.53 ± 2.90%; stone groove: 56.94 ± 2.91%) compared to the soil surface (53.90 ± 2.92%). Seeds that had been altered by being exposed to the environment were more attractive to rodents than fresh seeds (76.25 ± 2.20% versus 36.18 ± 2.29%). The seed removal behavior of rodents was significantly affected by the microhabitat and seed type. Finally, seeds that had fallen on the soil surface microhabitat incurred a lower predation risk than seeds fallen on other microhabitats, which increased their probability to germinate. Our results indicate that the lower predation rate of seeds from the endangered K. septentrionalis dropped on the soil surface increases trees’ likelihood of survival.

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“…Although Pinus koraiensis seedlings are shade tolerant, their need for light increases with age [35]. Previous studies have shown that understory light availability limits the growth and survival of Pinus koraiensis seedlings [5,29,30] while thinning from below increases light availability by creating forest gaps, promoting the regeneration of shade-tolerant species such as Pinus koraiensis [5,36,37]. A previous study finds that the low thinning and slash burning treatment enhances initial Spanish black pine seedling recruitments [38].…”

Section: Discussionmentioning

confidence: 99%

Seed Harvesting and Climate Change Interact to Affect the Natural Regeneration of Pinus koraiensis

Sun

et al. 2023

Forests

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The poor natural regeneration of Pinus koraiensis is a key limitation for restoring the primary mixed Pinus koraiensis forests. Seed harvesting and climate change are the important factors that influence the natural regeneration of Pinus koraiensis; however, it is hard to illustrate how, in synergy, they affect its regeneration at the landscape scale. In this study, we coupled an ecosystem process model, LINKAGES, with a forest landscape model, LANDIS PRO, to evaluate how seed harvesting and climate change influenced the natural regeneration of Pinus koraiensis over large temporal and spatial scales. Our results showed that seed harvesting decreased the abundance of Pinus koraiensis juveniles by 1, 14, and 18 stems/ha under the historical climate, and reduced by 1, 17, and 24 stems/ha under the future climate in the short- (years 0–50), medium- (years 60–100), and long-term (years 110–150), respectively. This indicated that seed harvesting intensified the poor regeneration of Pinus koraiensis, irrespective of climate change. Our results suggested that seed harvesting diminished the generation capacity of Pinus koraiensis over the simulation period. Seed harvesting reduced the abundance of Pinus koraiensis at the leading edge and slowed down its shift into high-latitude regions to adapt to climate change. Our results showed that the effect magnitudes of seed harvesting, climate change, their interaction and combination at the short-, medium- and long-term were −61.1%, −78.4%, and −85.7%; 16.5%, 20.9%, and 38.2%; −10.1%, −16.2% and −32.0%; and −54.7%, −73.8%, and −79.5%, respectively. Seed harvesting was a predominant factor throughout the simulation; climate change failed to offset the negative effect of seed harvesting, but the interactive effect between seed harvesting and climate change almost overrode the positive effect of climate change. Seed harvesting, climate change, and their interaction jointly reduced the natural regeneration of Pinus koraiensis. We suggest reducing the intensity of seed harvesting and increasing silvicultural treatments, such as thinning and artificial plantation, to protect and restore the primary mixed Pinus koraiensis forests.

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Effects of microhabitat on rodent-mediated seed dispersal in monocultures with thinning treatment

Cited by 16 publications

References 78 publications

The dispersal syndrome hypothesis: How animals shaped fruit traits, and how they did not

The dispersal syndrome hypothesis: How animals shaped fruit traits, and how they did not

Effects of microhabitat on rodent-mediated seed removal of endangered Kmeria septentrionalis in the karst habitat

Seed Harvesting and Climate Change Interact to Affect the Natural Regeneration of Pinus koraiensis

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