Abstract
Optimal understanding of biodiversity threats must consider the effects of population size and habitat quality on population viability. I examined the effects and relative importance of these factors for the performance of two endangered hemiparasitic plants, Melampyrum cristatum and M. arvense in Finland. I surveyed 18 M. cristatum and 14 M. arvense populations. Both habitat quality and population size influenced the performance of M. cristatum. By contrast, the performance of M. arvense was determined by habitat quality, but not influenced by population size. Habitat quality was improved in managed M. cristatum populations, which translated into greater hemiparasite performance in these populations. Degradation of suitable habitats has likely decreased the performance of the two endangered hemiparasites, resulting in reduced population sizes. The results highlight the importance of considering simultaneously population size effects and habitat quality. Habitat management seems to be the key to sustain or increase the viability of the hemiparasite populations, but the timing and intensity of management should be considered.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Habitat quality influenced M. cristatum performance.
- Taxon
- M. cristatum
Melampyrum cristatume0 - Outcome
- performance of M. cristatume0
- Setting
- habitat qualitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both habitat quality and population size influenced the performance of M. cristatum.”
Claim · model-written summary
Population size influenced M. cristatum performance.
- Taxon
- M. cristatumMelampyrum cristatume0
- Material
- population sizee0
- Outcome
- performance of M. cristatume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both habitat quality and population size influenced the performance of M. cristatum.”
Claim · model-written summary
Habitat quality determined M. arvense performance.
- Taxon
- M. arvense
Melampyrum arvensee0 - Outcome
- performance of M. arvensee0
- Setting
- habitat qualitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the performance of M. arvense was determined by habitat quality, but not influenced by population size.”
Claim · model-written summary
Population size did not influence M. arvense performance.
- Taxon
- M. arvenseMelampyrum arvensee0
- Material
- population sizee0
- Outcome
- performance of M. arvensee0
- Direction
- not influencede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the performance of M. arvense was determined by habitat quality, but not influenced by population size.”
Claim · model-written summary
Management improved M. cristatum habitat quality.
- Taxon
- M. cristatumMelampyrum cristatume0
- Treatment
- managede0
- Outcome
- Habitat qualitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Habitat quality was improved in managed M. cristatum populations”
Claim · model-written summary
Managed M. cristatum populations had greater performance.
- Taxon
- M. cristatumMelampyrum cristatume1
- Treatment
- managede1
- Outcome
- hemiparasite performancee0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which translated into greater hemiparasite performance in these populations.”
e1“managed M. cristatum populations”
Claim · model-written summary
Habitat degradation likely decreased performance of both hemiparasites.
- Taxon
- Melampyrum cristatum and M. arvenseMelampyrum arvenseMelampyrum cristatume1
- Outcome
- performance of the two endangered hemiparasitese0
- Direction
- decreasede0
- Setting
- Degradation of suitable habitatse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Degradation of suitable habitats has likely decreased the performance of the two endangered hemiparasites”
e1“Melampyrum cristatum and M. arvense”
Claim · model-written summary
Reduced performance likely resulted in reduced population sizes.
- Taxon
- Melampyrum cristatum and M. arvenseMelampyrum arvenseMelampyrum cristatume1
- Outcome
- population sizese0
- Direction
- reducede0
- Setting
- Degradation of suitable habitatse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in reduced population sizes.”
e1“Melampyrum cristatum and M. arvense”
e2“Degradation of suitable habitats”
Claim · model-written summary
Authors recommend habitat management to sustain or increase hemiparasite population viability.
Verbatim
e0“Habitat management seems to be the key to sustain or increase the viability of the hemiparasite populations, but the timing and intensity of management should be considered.”