Paper · 2006

RAIN FOREST SPECIES1

Mario Vallejo‐Marín; Sar A. Dominguez; Rodolfo Dirzo

6
claims
12
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Seed predation, an omnipresent phenomenon in tropical rain forests, is an important determinant of plant recruitment and forest regeneration. Although seed predation destroys large amounts of the seed crop of numerous tropical species, in many cases individual seed damage is only partial. The extent to which partial seed predation affects the recruitment of new individuals in the population depends on the type and magnitude of alteration of the germination behavior of the damaged seeds. We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal). Germination response to seed damage varied considerably among species but could be grouped into four distinct types: (1) complete inability to germinate under damage > 1%, (2) no effect on germination dynamics, (3) reduced germination with increasing damage, and (4) reduced final germination but faster germination with increasing damage. We conclude that partial seed predation is often nonlethal and argue that different responses to predation may represent different proximal mechanisms for coping with partial damage, with potential to shape, in the long run, morphological and physiological adaptations in tropical, large-seeded species.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

Germination response to simulated seed damage varied considerably among 11 tropical woody species and could be grouped into four distinct types.

Taxon
tropical woody speciese0
Treatment
simulated seed predatione0
Outcome
Germination response to seed damagee1

Verbatim

e0

“We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal)”

✓ located verbatim in the source · abstract, characters 492–640 · show in text ↑
e1

“Germination response to seed damage varied considerably among species but could be grouped into four distinct types”

✓ located verbatim in the source · abstract, characters 642–757 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In some tropical woody species, seed damage above 1% caused complete inability to germinate.

Taxon
tropical woody speciese0
Treatment
simulated seed predatione0
Outcome
complete inability to germinatee2
Qualifier
damage > 1%e2

Not reportedComparatorDirection

Verbatim

e0

“We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal)”

✓ located verbatim in the source · abstract, characters 492–640 · show in text ↑
e2

“(1) complete inability to germinate under damage > 1%”

✓ located verbatim in the source · abstract, characters 759–812 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

In some tropical woody species, simulated seed damage had no effect on germination dynamics.

Taxon
tropical woody speciese0
Treatment
simulated seed predatione0
Outcome
germination dynamicse3
Direction
no effecte3

Not reportedComparator

Verbatim

e0

“We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal)”

✓ located verbatim in the source · abstract, characters 492–640 · show in text ↑
e3

“(2) no effect on germination dynamics”

✓ located verbatim in the source · abstract, characters 814–851 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In some tropical woody species, germination was reduced with increasing seed damage.

Taxon
tropical woody speciese0
Treatment
simulated seed predatione0
Outcome
germinatione4
Direction
reducede4

Not reportedComparator

Verbatim

e0

“We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal)”

✓ located verbatim in the source · abstract, characters 492–640 · show in text ↑
e4

“(3) reduced germination with increasing damage”

✓ located verbatim in the source · abstract, characters 853–899 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

In some tropical woody species, increasing seed damage reduced final germination but made germination faster.

Taxon
tropical woody speciese0
Treatment
simulated seed predatione0
Outcome
reduced final germination but faster germinatione5
Direction
reducede5

Not reportedComparator

Verbatim

e0

“We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal)”

✓ located verbatim in the source · abstract, characters 492–640 · show in text ↑
e5

“(4) reduced final germination but faster germination with increasing damage”

✓ located verbatim in the source · abstract, characters 905–980 · show in text ↑
Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors conclude that partial seed predation is often nonlethal.

Taxon
tropical woody speciese0
Outcome
partial seed predation is often nonlethale6

Verbatim

e0

“We analyzed the germination dynamics of 11 tropical woody species subject to increasing levels of simulated seed predation (0-10% seed mass removal)”

✓ located verbatim in the source · abstract, characters 492–640 · show in text ↑
e6

“We conclude that partial seed predation is often nonlethal”

✓ located verbatim in the source · abstract, characters 982–1040 · show in text ↑