Autumn 2022 OŠ Izidora Poljaka Višnjica https://www.globe.gov/en/c/message_boards/find_thread?p_l_id=18703103&threadId=99622943 2026-04-17T13:20:21Z 2026-04-17T13:20:21Z Martina Simić Meznarić https://www.globe.gov/en/c/message_boards/find_message?p_l_id=18703103&messageId=99622942 2022-12-02T17:55:39Z 2022-12-02T11:50:14Z

Greetings to everyone. I am Martina Simić Meznarić. I am a GLOBE teacher at Elementary School Izidora Poljaka Višnjica. This academic year, my students studied the yellowing of the oak tree in the home school and the yellowing of the birch (2 trees) in the district school. The oak leaves changed colors very slowly and then the colors suddenly changed in one spot.<br /><br />Here is the data collected by monitoring oak yellowing.<br /><br />Data Date Range: 2021-09-10 to 2022-10-31<br /><br />Measured On: 2022-09-13<br />Greening Cycle Number: 1<br />Leaf Color List: 5G:4/2 5GY:4/8 5G:4/2 5G:4/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:4/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-09-16<br />Greening Cycle Number: 1<br />Leaf Color List: 5G:4/2 5GY:4/8 5G:4/2 5G:4/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:4/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-09-20<br />Greening Cycle Number: 1<br />Leaf Color List: 5G:4/2 5GY:4/8 5G:4/2 5G:4/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:4/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-09-30<br />Greening Cycle Number: 1<br />Leaf Color List: 5GY:4/8 5GY:4/8 5G:4/2 5G:4/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:4/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-06<br />Greening Cycle Number: 1<br />Leaf Color List: 5GY:4/8 5GY:4/8 5G:4/2 5G:4/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:4/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-11<br />Greening Cycle Number: 1<br />Leaf Color List: 5GY:4/8 5GY:4/8 5G:6/2 5G:6/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:6/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-13<br />Greening Cycle Number: 1<br />Leaf Color List: 5GY:4/8 5GY:4/8 5G:6/2 5G:6/2<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:6/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-18<br />Greening Cycle Number: 1<br />Leaf Color List: 5GY:4/8 5G:6/2 5G:6/2 5GY:4/8<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5G:6/2<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-20<br />Greening Cycle Number: 1<br />Leaf Color List: 5GY:6/10 5GY:5/10 5GY:5/10 5GY:5/10<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5GY:5/10<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-24<br />Greening Cycle Number: 1<br />Leaf Color List: 5YR:7/12 5YR:7/12 5YR:7/12 5YR:7/12<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 5YR:7/12<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-27<br />Greening Cycle Number: 1<br />Leaf Color List: 7.5YR:5/4 7.5YR:5/4 7.5YR:5/4 7.5YR:5/4<br />Number Of Leaves: 4<br />Leaf State: color change<br />Predominate Leaf Color: 7.5YR:5/4<br />Number Of Same Plants: 1<br /><br />Measured On: 2022-10-31<br />Greening Cycle Number: 1<br />Leaf State: fallen<br />Number Of Same Plants: 1<br /><br /><img src="https://www.globe.gov/documents/18702582/0/%C5%BDu%C4%87enje+hrasta.png/961581ec-bcd8-3260-76b0-8fe8dbd5f8fd?t=1669980969802&amp;imagePreview=1" /><br /><br /><br /><img src="https://www.globe.gov/documents/18702582/0/4_10.jpg/44177925-89b6-cd4f-e95b-7c1c8173375d?t=1669981316088&amp;imagePreview=1" /><br /><img src="https://www.globe.gov/documents/18702582/0/4_10__.jpg/8bf8812a-efd7-275b-2fda-d69870278e1b?t=1669981359072&amp;imagePreview=1" /><br /><br /><img src="https://www.globe.gov/documents/18702582/0/15_10_12.jpg/3532ad23-17e4-7057-4dcb-3a006b25de02?t=1669981482838&amp;imagePreview=1" /><br /><br /><img src="https://www.globe.gov/documents/18702582/0/15_10_17.jpg/d17ddc26-ddca-59b3-30f9-872c20ecdd35?t=1669981599243&amp;imagePreview=1" /><br /><br /><img src="https://www.globe.gov/documents/18702582/0/HRAST+27_10_3.jpg/8859ace0-5e6c-71ba-9844-b0872571f8f6?t=1669981703978&amp;imagePreview=1" /><br /><img src="https://www.globe.gov/documents/18702582/0/28_10.jpg/7ec74827-458e-d421-b528-0b529f6ed344?t=1669981764199&amp;imagePreview=1" /><br />​​​​​​​<img src="https://www.globe.gov/documents/18702582/0/15_10_2.jpg/0b9cf7f1-f966-4d27-012a-f1f669adb2e1?t=1670003409938&amp;imagePreview=1" /><br />​​​​​​​

Martina Simić Meznarić 2022-12-02T11:50:14Z