Abstract
ABSTRACT Leafing activity is a crucial part of the tree life cycle and is tightly linked to photosynthesis, gas exchange and biomass accumulation, among other processes. Despite this, many aspects of leafing phenology, such as climate drivers of community and species‐level temporal patterns, are poorly understood in tropical rainforest species. Here, we present 18 years of above‐canopy phenological observations of leafing phenology for Davidsonia pruriens , an important endemic species in the Wet Tropics, from January 1997 to December 2014. We assessed changes in leafing patterns through time and how they are being affected by climate drivers. We found that, while the tropical rainforest region is considered to have low seasonality in leaf production, leafing in this species was seasonal with a peak in the wet season. Analysis of climate drivers showed that increased leaf production was correlated with increased daily rainfall and decreased solar radiation. Interannual activity responded similarly to changes in annual rainfall and solar radiation but was also significantly impacted by cyclones and El Niño events. Our results show that Davidsonia pruriens has seasonal leafing patterns which are strongly influenced by climate drivers. Our study is the first to present field‐based measurements of long‐term leafing phenology in Australia, which clearly demonstrate climate change sensitivity of leafing in an endemic plant, a plant that is a significant bush tucker species to Aboriginal traditional custodians of the rainforest region of Northern Australia.
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Claims 7
Claim · model-written summary
Davidsonia leafing was seasonal and peaked in the wet season.
- Taxon
- Davidsonia pruriens
Davidsonia pruriense1 - Outcome
- leafinge0
- Direction
- peake0
- Setting
- wet seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leafing in this species was seasonal with a peak in the wet season”
e1“for Davidsonia pruriens , an important endemic species”
Claim · model-written summary
Increased daily rainfall correlated with increased leaf production.
- Taxon
- Davidsonia pruriensDavidsonia pruriense1
- Outcome
- leaf productione0
- Direction
- increasede0
- Setting
- daily rainfalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf production was correlated with increased daily rainfall”
e1“for Davidsonia pruriens , an important endemic species”
Claim · model-written summary
Decreased solar radiation correlated with increased leaf production.
- Taxon
- Davidsonia pruriensDavidsonia pruriense1
- Outcome
- leaf productione0
- Direction
- increasede0
- Setting
- solar radiatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf production was correlated with increased daily rainfall and decreased solar radiation”
e1“for Davidsonia pruriens , an important endemic species”
Claim · model-written summary
Interannual leafing activity responded to annual rainfall changes.
- Taxon
- Davidsonia pruriensDavidsonia pruriense1
- Outcome
- Interannual activitye0
- Setting
- annual rainfalle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interannual activity responded similarly to changes in annual rainfall and solar radiation”
e1“for Davidsonia pruriens , an important endemic species”
Claim · model-written summary
Interannual leafing activity responded to solar radiation changes.
- Taxon
- Davidsonia pruriensDavidsonia pruriense1
- Outcome
- Interannual activitye0
- Setting
- solar radiatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interannual activity responded similarly to changes in annual rainfall and solar radiation”
e1“for Davidsonia pruriens , an important endemic species”
Claim · model-written summary
Cyclones significantly affected interannual leafing activity.
- Taxon
- Davidsonia pruriensDavidsonia pruriense1
- Outcome
- Interannual activitye0
- Setting
- cyclonese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interannual activity responded similarly to changes in annual rainfall and solar radiation but was also significantly impacted by cyclones and El Niño events.”
e1“for Davidsonia pruriens , an important endemic species”
Claim · model-written summary
El Niño events significantly affected interannual leafing activity.
- Taxon
- Davidsonia pruriensDavidsonia pruriense1
- Outcome
- Interannual activitye0
- Setting
- El Niño eventse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interannual activity responded similarly to changes in annual rainfall and solar radiation but was also significantly impacted by cyclones and El Niño events.”
e1“for Davidsonia pruriens , an important endemic species”