Dryad
Published July 27, 2022 | Version v1
Dataset Open

Impacts of abiotic and biotic factors on terrestrial leeches in

Creators

  • 1. University of Michigan-Ann Arbor
  • 2. Universitas Nasional Pasim
  • 3. One Forest Project, Gunung Palung National Park, West Kalimantan, Indonesia*
  • 4. University of Cambridge
  • 5. University of Colorado Boulder
  • 6. Oxford Brookes University
  • 7. Victoria University of Wellington

Description

Haemadipsid leeches are ubiquitous inhabitants of tropical and sub-tropical forests in the Indo-Pacific region. They are increasingly used as indicator taxa for biomonitoring, yet very little is known about their basic ecology. For example, to date no study has assessed the occurrence and distribution of haemadipsid leeches across naturally occurring gradients within intact habitats. We analysed a long-term data set (2012-2020) on the closely related tiger (Haemadipsa picta) and brown (Haemadipsa spp.) leech species to investigate if and how abiotic and biotic factors influence their occurrence across a gradient of forest types at an undisturbed tropical rainforest site in Indonesian Borneo. We compared a series of negative binomial mixed models and found that, of the abiotic factors, soil moisture had the largest positive effect on encounter rates of both leech species. Among biotic factors, forest type had differential effects on counts of the two species: while tiger leech counts were greater in low elevation forest types, brown leech counts were greater in high elevation forest types. Additionally, we found that the presence of one species had a positive effect on the presence of the other species. Finally, our results show that the tiger leech has a narrower distribution, being restricted to lower elevation forest types with higher water retention, suggesting that the tiger leech could be more sensitive to lower soil moisture levels.

Notes

Microsoft Excel & Program R

Funding provided by: University of Michigan
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100007270
Award Number:

Funding provided by: Victoria University of Wellington
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001538
Award Number:

Funding provided by: Leakey Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100005966
Award Number:

Funding provided by: Idea Wild
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100007142
Award Number:

Funding provided by: Mohamed bin Zayed Species Conservation Fund
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100011672
Award Number:

Funding provided by: Disney Conservation Fund
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100012168
Award Number:

Funding provided by: AZA Ape TAG Initiative*
Crossref Funder Registry ID:
Award Number:

Funding provided by: Anne Nacey Maggioncalda and Jeffery Maggioncalda*
Crossref Funder Registry ID:
Award Number:

Files

leech_tidied_data.csv

Files (2.6 MB)

Name Size Download all
md5:9473d1cea69f227886ec3306a5590c80
2.6 MB Preview Download
md5:9606a78d8a26420a641b19e15f50b307
14.9 kB Download

Additional details

Related works

Is derived from
10.5281/zenodo.6856326 (DOI)