Status And Trend Flashcards
(15 cards)
What is the role of wetlands in the Philippines biodiversity context?
a) They offer positive output, but limited, habitat for some species.
b) They support some species, but primarily only in coastal areas.
c) They provide diverse habitats and support a wide range of species, contributing significantly to biodiversity.
d) They contribute to local biodiversity, but only in specific, isolated locations.
c) They provide diverse habitats and support a wide range of species, contributing significantly to biodiversity.
How does the inclusion of both fresh and brackish water in inland wetlands positively influence ecological functions?
a) It enhances water purification processes.
b) It supports some species, but only those tolerant to a narrow salinity range.
c) It creates diverse habitats, supporting a wider range of species due to varying salinity.
d) It contributes to local species diversity, but only in specific, limited areas.
c) It positively creates diverse habitats, supporting a wider range of species due to varying salinity.
How do lakes, as a dominant type of inland wetland, positively contribute to the ecosystem?
a) They offer some water storage capacity.
b) They support some species, but only those adapted to stagnant water.
c) They store freshwater and provide habitats, supporting diverse aquatic life.
d) They contribute to local water regulation, but only in certain regions.
c) They store freshwater and provide habitats, supporting diverse aquatic life.
How does the designation of wetlands with international importance positively reflect on their ecological value?
a) It indicates some level of ecological significance.
b) It suggests they support some species, but primarily those with economic value.
c) It acknowledges their unique biodiversity and ecological functions on a global scale.
d) It contributes to regional ecological recognition, but only through specific conservation projects.
c) It acknowledges their unique biodiversity and ecological functions on a global scale.
How does the variation in water depth within wetlands positively influence habitat diversity?
a) It provides some habitat variation.
b) It supports some species, but only those adapted to shallow waters.
c) It creates diverse habitats, supporting a wider range of aquatic organisms adapted to different depths.
d) It contributes to local habitat diversity, but only in specific, isolated wetland areas.
c) It creates diverse habitats, supporting a wider range of aquatic organisms adapted to different depths.
How do seagrass beds contribute to the overall biodiversity status in the Philippines context?
a) They provide some habitat for a limited number of marine species.
b) They support a wide range of marine life, enhancing species diversity and ecosystem health.
c) They offer minor ecological benefits, primarily for commercially important species.
d) They contribute to local biodiversity, but only in specific, isolated locations.
b) They support a wide range of marine life, enhancing species diversity and ecosystem health.
What is the role of rhizomes in seagrass beds?
a) They anchor the plants, allowing them to stabilize sediments and spread vegetatively.
b) They provide a primary food source for marine herbivores.
c) They facilitate the uptake of nutrients directly from the water column.
d) They serve as a reproductive structure for seed dispersal.
a) They anchor the plants, allowing them to stabilize sediments and spread vegetatively.
How do seagrass beds reduce sedimentation across coastal areas?
a) By increasing water turbulence and promoting sediment suspension.
b) By slowing down water flow and trapping sediment particles among their leaves and roots.
c) By releasing chemicals that dissolve sediment particles.
d) By attracting organisms that consume sediment-dwelling species.
b) By slowing down water flow and trapping sediment particles among their leaves and roots.
The “vulnerable” status of Halophila beccarii, as indicated, primarily highlights what conservation concern?
a) A minor decline in a specific seagrass species with limited ecological consequences.
b) The potential loss of a unique species, indicating broader threats to seagrass ecosystems.
c) The natural fluctuation in population size of a common seagrass species.
d) The localized vulnerability of seagrass species in specific coastal areas.
b) The potential loss of a unique species, indicating broader threats to seagrass ecosystems.
How does the diverse family of seagrass contribute to the Philippines biodiversity context?
a) It limits species adaptation to specific environmental conditions.
b) It ensures a uniform distribution and ecological function across all coastal regions.
c) It restricts the habitat range and ecological niches available for marine organisms.
d) It provides a variety of habitats and supports a wider range of marine life due to their diverse genetic and morphological characteristics.
d) It provides a variety of habitats and supports a wider range of marine life due to their diverse genetic and morphological characteristics
What is the role of mangrove forests along coastal areas?
a) They primarily serve as sites for urban development.
b) They provide habitat, protect shorelines, and support marine biodiversity.
c) They are mainly used for aquaculture development.
d) They are primarily known for their limited ecological functions.
b) They provide habitat, protect shorelines, and support marine biodiversity.
How do mangrove forests contribute to the livelihood of people living in coastal areas?
a) They offer only limited economic benefits.
b) They primarily serve as barriers to coastal development.
c) They support fisheries, provide resources, and protect communities from storms.
d) They are mainly used for industrial aquaculture practices.
c) They support fisheries, provide resources, and protect communities from storms.
The significant reduction in mangrove extent from 1918 to 2010 primarily indicates what about human impact on these ecosystems?
a) A natural decline in mangrove populations due to climate change.
b) A minor fluctuation in mangrove cover with no long-term consequences.
c) A substantial loss due to human activities such as aquaculture and urbanization.
d) An increase in mangrove rehabilitation efforts over time.
c) A substantial loss due to human activities such as aquaculture and urbanization.
How does weak enforcement of laws serve as a threat to mangrove forests?
a) It encourages the sustainable use of mangrove resources.
b) It ensures that existing conservation policies are effectively implemented.
c) It allows for unchecked destruction and exploitation of mangrove ecosystems.
d) It promotes community-based management of mangrove forests.
c) It allows for unchecked destruction and exploitation of mangrove ecosystems.
How do inappropriate species and sites affect rehabilitation efforts specifically in mangrove restoration?
a) They enhance the success of restoration projects by introducing diverse species.
b) They ensure that rehabilitated areas quickly recover their ecological functions.
c) It reduces the survival rate of the planted mangrove species due to the selection of unsuitable species or locations.
d) They promote natural regeneration of mangrove forests without human intervention.
c) It reduces the survival rate of the planted mangrove species due to the selection of unsuitable species or locations.
