title: The value of validated vulnerability data for conservation planning in rapidly changing landscapes

authors: Weeks, Emily Sherra

subjects: conservation planning

abstract: Data needed for informed conservation prioritization are generally greater than the data available, and surrogates are often used. Although the need to anticipate threats is recognized, the effectiveness of surrogates for predicting habitat loss (or vulnerability) to land-use change is seldom tested. Here, we compared properties of two different vulnerability surrogates to validated vulnerability—validated prediction of habitat conversion based on a recent assessment of land-use change. We found that neither surrogate was a particularly effective predictor of vulnerability. Importantly, both surrogates performed poorly in places most imminently threatened with habitat conversion. We also show that the majority of areas protected over the last two decades have low vulnerability to the most active threatening process in this biome (habitat conversion). The contrary patterns of vulnerability and protection suggest that use of validated vulnerability would help to clarify protection needs, which might lead to the improvement of conservation decisions. Our study suggests the integration of validated vulnerability into conservation planning tools may be an important requirement for effective conservation planning in rapidly changing landscapes. We apply our results to discuss the practical considerations and potential value of incorporating validated vulnerability into conservation planning tools both generally and in the context of New Zealand’s indigenous grasslands.

text: The value of validated vulnerability data for conservation planning in rapidly changing landscapes Data needed for informed conservation prioritization are generally greater than the data available, and surrogates are often used. Although the need to anticipate threats is recognized, the effectiveness of surrogates for predicting habitat loss (or vulnerability) to land-use change is seldom tested. Here, we compared properties of two different vulnerability surrogates to validated vulnerability—validated prediction of habitat conversion based on a recent assessment of land-use change. We found that neither surrogate was a particularly effective predictor of vulnerability. Importantly, both surrogates performed poorly in places most imminently threatened with habitat conversion. We also show that the majority of areas protected over the last two decades have low vulnerability to the most active threatening process in this biome (habitat conversion). The contrary patterns of vulnerability and protection suggest that use of validated vulnerability would help to clarify protection needs, which might lead to the improvement of conservation decisions. Our study suggests the integration of validated vulnerability into conservation planning tools may be an important requirement for effective conservation planning in rapidly changing landscapes. We apply our results to discuss the practical considerations and potential value of incorporating validated vulnerability into conservation planning tools both generally and in the context of New Zealand’s indigenous grasslands.

year: 2013

title: Mode I and Mode II interlaminar fracture toughness of composite laminates interleaved with electrospun nanofibre veils

authors: Beckermann, Gareth W.

subjects: Science & Technology

abstract: In this study, the effects of interleaved nanofibre veils on the Mode I and Mode II interlaminar fracture toughness (ILFT) of autoclave cured unidirectional carbon/epoxy composite laminates were investigated. Various electrospun nanofibre veils consisting of a range of different polymer types, fibre diameters and veil architectures were placed in the laminate mid-planes, which were subsequently subjected to double cantilever beam and end-notch flexure tests. It was found that the polymer type and veil areal weight were the most important factors contributing to laminate performance. A 4.5 g/m2 PA66 veil provided the best all-round performance with fracture toughness improvements of 156% and 69% for Mode I and Mode II, respectively.

text: Mode I and Mode II interlaminar fracture toughness of composite laminates interleaved with electrospun nanofibre veils In this study, the effects of interleaved nanofibre veils on the Mode I and Mode II interlaminar fracture toughness (ILFT) of autoclave cured unidirectional carbon/epoxy composite laminates were investigated. Various electrospun nanofibre veils consisting of a range of different polymer types, fibre diameters and veil architectures were placed in the laminate mid-planes, which were subsequently subjected to double cantilever beam and end-notch flexure tests. It was found that the polymer type and veil areal weight were the most important factors contributing to laminate performance. A 4.5 g/m2 PA66 veil provided the best all-round performance with fracture toughness improvements of 156% and 69% for Mode I and Mode II, respectively.

year: 2015-05-01

title: Riperata kahutia: a woman of mana

authors: Nikora, Shelley Aroha

subjects: Riperata Kahutia

abstract: Riperata Kahutia is widely remembered as a leader in the history of Tūranganuiā-
Kiwa, who fought to retain and repossess land during the difficult times of the
1860's. During this period of rapid social change and political upheavals resulting
in injustices, the exercise of rangatiratanga took many forms. Responses to
change covered a wide spectrum and there was no 'right' way of doing things,
simply leaders making decisions on the basis of what they and their people
thought at the time were best. Riperata utilised the law as a means of retaining
the land and the mana of her people. While her status as a rangatira was never in
doubt, innuendo surfaced suggesting she may have received more land entitlement
than she was qualified for.
The activities by Riperata may have been different from other leaders but the
purpose was the same: to preserve the people and the land. Her strategies for
doing so, based on her inherited mana and upbringing, her knowledge of local iwi
traditions, her acquisition of new skills introduced by Pākehā and her innovative
approaches to exercising her rangatiratanga, make her a worthwhile study.
This thesis will support the viewpoint that Riperata Kahutia acted on behalf of her
people and for the good of her people. It will be argued Riperata was a visionary
who embraced the changes imposed upon a society enduring the consequences of
colonisation. A major objective is to dispel suggestions she embellished her
rights.

text: Riperata kahutia: a woman of mana Riperata Kahutia is widely remembered as a leader in the history of Tūranganuiā-
Kiwa, who fought to retain and repossess land during the difficult times of the
1860's. During this period of rapid social change and political upheavals resulting
in injustices, the exercise of rangatiratanga took many forms. Responses to
change covered a wide spectrum and there was no 'right' way of doing things,
simply leaders making decisions on the basis of what they and their people
thought at the time were best. Riperata utilised the law as a means of retaining
the land and the mana of her people. While her status as a rangatira was never in
doubt, innuendo surfaced suggesting she may have received more land entitlement
than she was qualified for.
The activities by Riperata may have been different from other leaders but the
purpose was the same: to preserve the people and the land. Her strategies for
doing so, based on her inherited mana and upbringing, her knowledge of local iwi
traditions, her acquisition of new skills introduced by Pākehā and her innovative
approaches to exercising her rangatiratanga, make her a worthwhile study.
This thesis will support the viewpoint that Riperata Kahutia acted on behalf of her
people and for the good of her people. It will be argued Riperata was a visionary
who embraced the changes imposed upon a society enduring the consequences of
colonisation. A major objective is to dispel suggestions she embellished her
rights.

year: 2009