title: Seasonal changes in phytoplankton nutrient limitation: Lake Rotorua

authors: Tempero, Grant Wayne

abstract: The management of macronutrient availability is central for reducing harmful algal blooms and the restoration of aquatic ecosystems. While there is some dispute as to the need for phosphorus (P) only control versus P and nitrogen (N) control, scientific opinion generally supports dual nutrient control in New Zealand lakes. Previous nutrient limitation studies of Lake Rotorua conducted during the 1970s and 1980s reported N limitation to varying degrees. This period coincided with the disposal of sub-optimally treated municipal wastewater to the lake, resulting in significant P loading and resultant algal blooms. Land disposal of wastewater was initiated in 1991 reducing nutrient loads to the lake, however, no further nutrient limitation studies were conducted until the summer of 2004 when N and P co-limitation was reported. From the mid-2000s water quality improved from a Trophic Lake index (TLI) of approximately 4.8 to 4.2, a change likely driven, in part, by sediment P depletion following the change to land disposal of wastewater and the initiation of alum dosing in 2006.

text: Seasonal changes in phytoplankton nutrient limitation: Lake Rotorua The management of macronutrient availability is central for reducing harmful algal blooms and the restoration of aquatic ecosystems. While there is some dispute as to the need for phosphorus (P) only control versus P and nitrogen (N) control, scientific opinion generally supports dual nutrient control in New Zealand lakes. Previous nutrient limitation studies of Lake Rotorua conducted during the 1970s and 1980s reported N limitation to varying degrees. This period coincided with the disposal of sub-optimally treated municipal wastewater to the lake, resulting in significant P loading and resultant algal blooms. Land disposal of wastewater was initiated in 1991 reducing nutrient loads to the lake, however, no further nutrient limitation studies were conducted until the summer of 2004 when N and P co-limitation was reported. From the mid-2000s water quality improved from a Trophic Lake index (TLI) of approximately 4.8 to 4.2, a change likely driven, in part, by sediment P depletion following the change to land disposal of wastewater and the initiation of alum dosing in 2006.

year: 2020

title: Surgical treatment of early stage breast cancer in the Auckland and Waikato regions of New Zealand

authors: Campbell, Ian

subjects: Science & Technology

abstract: Background
The aim of this study was to understand the factors influencing the use of surgical options by New Zealand women with newly diagnosed breast cancer.

Methods
Using data from the Auckland and Waikato breast cancer registers, we included 11 798 women diagnosed with stage I–III breast cancer from June 2000 to May 2013. The characteristics of women receiving different surgical treatments and having immediate breast reconstruction following mastectomy were examined. A logistic regression was used to estimate the odds ratio of having breast‐conserving surgery (BCS) versus mastectomy and immediate post‐mastectomy reconstruction. Bilateral breast cancer cases and women with unilateral breast cancer, but who had bilateral surgery, were also identified.

Results
Fifty‐two percent of women received BCS and 44% had mastectomy over the study period. Key influences associated with BCS were age, mode of diagnosis, socio‐economic status and public or private treatment. Just under half of the women who underwent bilateral surgery did not have bilateral cancer. Nineteen percent of women undergoing mastectomy underwent immediate reconstruction. Implant use increased slightly over the study period but there was a decrease in the use of autologous flap procedures.

Conclusion
Surgical management of women with localized breast cancer was generally in line with guidelines, but with potential to further increase the use of breast conservation and immediate reconstruction in suitable cases.

text: Surgical treatment of early stage breast cancer in the Auckland and Waikato regions of New Zealand Background
The aim of this study was to understand the factors influencing the use of surgical options by New Zealand women with newly diagnosed breast cancer.

Methods
Using data from the Auckland and Waikato breast cancer registers, we included 11 798 women diagnosed with stage I–III breast cancer from June 2000 to May 2013. The characteristics of women receiving different surgical treatments and having immediate breast reconstruction following mastectomy were examined. A logistic regression was used to estimate the odds ratio of having breast‐conserving surgery (BCS) versus mastectomy and immediate post‐mastectomy reconstruction. Bilateral breast cancer cases and women with unilateral breast cancer, but who had bilateral surgery, were also identified.

Results
Fifty‐two percent of women received BCS and 44% had mastectomy over the study period. Key influences associated with BCS were age, mode of diagnosis, socio‐economic status and public or private treatment. Just under half of the women who underwent bilateral surgery did not have bilateral cancer. Nineteen percent of women undergoing mastectomy underwent immediate reconstruction. Implant use increased slightly over the study period but there was a decrease in the use of autologous flap procedures.

Conclusion
Surgical management of women with localized breast cancer was generally in line with guidelines, but with potential to further increase the use of breast conservation and immediate reconstruction in suitable cases.

year: 2018

title: WERO: A pānui for tauira Māori in psychology

authors: Waitoki, Waikaremoana

abstract: The first WERO pānui was edited in 1991 by the first Māori in psychology at Waikato University, Stephanie Palmer and Linda Waimarie Nikora. This pānui is the third in the WERO series, aiming to continue the legacy of the first publication in 1991 (edited by Stephanie Palmer) and the second in 1992 (edited by Hikitapua). The pānui continues to center diverse Māori perspectives with relevance for those affected by racial oppression in psychology.

text: WERO: A pānui for tauira Māori in psychology The first WERO pānui was edited in 1991 by the first Māori in psychology at Waikato University, Stephanie Palmer and Linda Waimarie Nikora. This pānui is the third in the WERO series, aiming to continue the legacy of the first publication in 1991 (edited by Stephanie Palmer) and the second in 1992 (edited by Hikitapua). The pānui continues to center diverse Māori perspectives with relevance for those affected by racial oppression in psychology.

year: 2024-06-03